LONDON -- Usually Friday night is one the quietest times in the frenzied world of the English Premier League. Players can be found on gaming consoles in hotel rooms on the eve of games, or resting at home in anticipation of a Sunday game. But the pre-game calm will be shattered by the closing of the winter transfer window on Friday, with clubs racing to sign reinforcements or offload rejects for the final time this season. Here are five things to know about the transfer deadline-day and the weekends Premier League matches: CLASH OF THE CHALLENGERSManchester City and Chelsea will be relieved their fixture has been shunted back to Monday, minimizing any disruption for their top-of-the-table meeting. "Its the ultimate test," Chelsea defender Gary Cahill said. "Its going to be a really, really tough game." The City squad hardly needs much tinkering. Manuel Pellegrinis side took its goal tally this season to 115 in all competitions with a 5-1 thumping of Tottenham that took them back to the Premier League summit. At the same time, though, Chelsea was being frustrated by West Ham — drawing 0-0 — and travels to the Etihad three points behind City. The game pits the stingiest defence — Chelsea has conceded 20 in 23 — against the leagues most prolific attack — City has scored 68 in 23. "As a collective unit, as a whole team, were working really hard defensively, not just at the back," Cahill said. Chelsea got the better of City in their last clash, winning 2-1 at Stamford Bridge in October. ARSENAL BLIPBeing knocked off the top has taken the wind out of Arsenals title charge. And after being held at Southampton, the Gunners host a resurgent Crystal Palace on Sunday. "The kind of performance we delivered at Southampton will not move us forward, so lets focus to come back on Sunday and produce a good performance," Arsenal manager Arsene Wenger said. By then will there be any new faces in an Arsenal side looking to produce a first trophy since 2005? Its unclear. "Are we active? Yes. Are we close to sign anybody? No," Wenger said on Thursday. "There is not long now, that is true." Top of the target list is Julian Draxler, but Schalke doesnt seem to be a willing seller. Schalke sporting director Horst Heldt said he was "very convinced" the 20-year-old attacking midfielder will remain at the German club for the rest of the season. Arsenal will be without midfielders Jack Wilshere, who has an ankle problem, and Aaron Ramsey, who faces several weeks out with a thigh injury. LEAKY TOTTENHAMTottenham was brought down to earth with a bang by City on Wednesday as Tim Sherwoods unbeaten start as manager in the league ended. The north London club, which has conceded 11 goals to City this season, has what seems to be an easy trip to Hull on Saturday. "We have to be positive because we are still fifth, three points behind Liverpool," goalkeeper Hugo Lloris said. "So it is open. We just need to be focused." NORTH-EAST DERBYNewcastle is preparing for the derby against Sunderland on Saturday still trying to replace Yohan Cabaye, having received more than $27 million for the midfielder from Paris Saint-Germain this week. Manager Alan Pardew is waiting for a bid for Lyon midfielder Clement Grenier to be accepted. "He has tremendous creative technical ability," Pardew said. Sunderland, which is out of the relegation zone for the first time since August, signed Argentina striker Ignacio Scocco on Thursday from Internacional. MOYES EYES MOMENTUMManchester United is chasing its first back-to-back league wins in a month when the champions face Stoke on Saturday still in seventh place. David Moyes push for the top four is being helped by how easily record-signing Juan Mata slotted into the team for a 2-0 win over Cardiff on Tuesday after joining from Chelsea. "Juan looked like he had been here for years," winger Ashley Young said. "He had only been training for two days and it was his first game but he has gelled straight away." Salomon Clearance Uk . Interestingly, the culprits were not rookies, but well paid, experienced pros. The first gaffe came in the 24th minute of arguably the biggest early season MLS game in history between Seattle and Toronto. Sounder newcomer Marco Pappa, (with over 100 MLS games, and 39 Guatemalan Caps to his name) attempted a back pass to one of his central defenders. Cheap Salomon Shoes Uk . Ryu (8-3) allowed a run and three hits in six innings and struck out six in his 13th start. In his first 13 starts last season -- his first in the major leagues -- the left-hander was 8-5 with a 2.85 ERA. This was the ninth time this year that Ryu has allowed fewer than three earned runs, and he is 7-0 in those games. http://www.cheapsalomonuk.com/ . The triple gold medallist from the 2010 Paralympics tweeted on Tuesday: "Woke up with a virus yesterday. Timing couldnt be much worse. Not the ideal prep for the . Salomon Shoes Uk . According to a report from CSN Bay Area, the 49ers are bracing for 6-8 game suspension for their outside linebacker. Salomon Outlet Uk . Malone will become an unrestricted free-agent and as per the collective bargaining agreement, the Lightning will be responsible for two-thirds of the remainder of his contract over twice the length of the rest of the deal.The National Rugby League has taken strong action against the Parramatta Eels following salary cap breaches. Parramatta have been docked all 12 competition points they have earned this season and fined $1.25m (£850,000). The Eels had been in fifth place after winning six of their nine matches, and Tuesdays decision drops them to bottom of the table.Last year, Parramatta was fined and put on notice following previous salary cap breaches, which occurred in 2015.New investigations began in February following reports that the Eels had failed to disclose that a company sponsoring a supposed third-party deal for lock Anthony Watmough was a wholly-owned subsidiary of the club.Parramatta willl not be eligible to earn competition points until they are under the salary cap, and Watmough may help them in that quest.ddddddddddddatmough, who moved to Parramatta last year, hasnt played this season due to chronic knee injuries. If he retires, it would allow the Eels to take him off their salary list and be under the cap.The NRL had previously deducted points from the Canterbury Bulldogs in 2002, New Zealand Warriors in 2006 and Melbourne Storm in 2010 for salary cap infringements. 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