Ryan Giggs is fighting to be fit for Sunday's big Premier League showdown with Liverpool. United's 11-times title winner has been out of Sir Alex Ferguson's squad since fracturing his arm five weeks ago. The 36-year-old hurt himself in an accidental collision against Aston Villa at Villa Park last month. He has missed seven matches, including both AC Milan ties and the Carling Cup final. But the winger started full- contact training with the Reds first team on Tuesday and the sessions this week will determine whether Fergie will have the bonus of his experience in Sunday's vital lunchtime clash against United's bitter rivals. Giggs is set to have the plate that was inserted into his arm following the incident removed in the summer. Since the setback Giggs has been cycling and swimming at United's Carrington training HQ and is now just match sharpness away from a comeback. If all goes well in training this week Fergie and the Reds medical staff are set to assess him before the Liverpool match at Old Trafford to determine whether he can be included. But it is looking good for the club's record appearance- maker. His form this term, though only starting in 16 matches, has already earned him a new 12-month contract that will keep him at the club until the summer of 2011. Giggs' return would be a major bonus for Fergie who has started the Welshman in the majority of United's heavyweight games this season. He was in the XI for the matches against Arsenal, Liverpool and Chelsea and also began both Carling Cup semi-final ties against City. How important is Giggs to United's season's run-in? Have your say.