Premier League Injury Tracker
Alex Livesey/Getty Images
United defender Nemanja Vidic picked up a knee problem during the win over Liverpool, while fellow centre-half Jonny Evans missed the game after suffering a hamstring injury in training on Saturday.
England international Ashley Young limped out of the 2-1 win over the Merseysiders with a knee injury.
Arsenal were dealt a blow ahead of their defeat by Manchester City when midfielder Mikel Arteta was ruled out with a calf problem.
Ashley Young was injured during Manchester United's 2-1 win over Liverpool on Sunday.
Alex Livesey/Getty Images
Serbian defender Nemanja Vidic, who has only recently returned from a serious knee problem, appeared to suffer the injury after an aerial challenge in the 65th minute of the game but played on until 10 minutes before the end, when he was replaced by Chris Smalling.
Winger Ashley Young, who left Old Trafford on crutches, was hurt in a challenge with Liverpool defender Daniel Agger in the first half and did not return to the field after the interval.
Both Vidic and Young are likely to miss the midweek FA Cup third-round replay against West Ham United and the Premier League trip to Tottenham next weekend.
United defender Jonny Evans was forced to pull out of the game after picking up a hamstring injury following training on Saturday.
The Northern Ireland international is also expected to miss the cup tie against the Hammers.
Striker Wayne Rooney, however, is on the way back to action after recovering from the knee injury he suffered in training on Christmas Day.
Arsenal midfielder Mikel Arteta is expected to be out for three weeks.
Ben Hoskins/Getty Images
The 30-year-old missed the 2-0 defeat to Manchester City on Sunday and Gunners manager Arsene Wenger is looking at potential replacements during the transfer window this month.
Diaby made his first competitive start since Sept. 29 after a long-term thigh problem.
Wigan defender Ivan Ramis suffered a serious injury at Fulham on Saturday.
Ian Walton/Getty Images
The 28-year-old suffered a knee ligament injury during the 1-1 draw at Craven Cottage and manager Roberto Martinez is bracing himself for bad news.
The Spaniard was carried from the field in the closing stages of the game and could miss the rest of the season.
Luke Shaw was carried off the field during Southampton's 1-0 win at Aston Villa.
Clive Mason/Getty Images
The 17-year-old was carried off during the closing stages of the game at Villa Park where Rickie Lambert scored the only goal of the game.
Shaw signed a new deal with the club last week after being strongly linked with a move to Arsenal during this transfer window.
Manchester City midfielder Jack Rodwell is nearing a return from injury.
Shaun Botterill/Getty Images
The 21-year-old has not played for City since September due to hamstring problems but is expecting to return to action in two weeks.
City manager Roberto Mancini has lost the services of midfielder Yaya Toure to African Nations Cup duty with the Ivory Coast and will welcome the return of the England international, who has struggled to make an impact since his £12 million move from Everton in the summer.