LONDON, Jan 17 (Reuters) - Manchester United midfielder Darren Fletcher has been ruled out for the rest of the season after having surgery to resolve a bowel condition, the Premier League leaders said on Thursday. The 28-year-old Scotland international missed most of last season and the start of the current campaign because of the problem but returned to make 13 appearances for club and country since September. His last match was an 89th-minute substitute appearance in United's 4-3 win over Newcastle on Dec. 26. ... More...