The Old Trafford star came through a tough session at their Carrington training ground yesterday and is available for the final-day trip to Wigan.
Striker Roo was feared to have suffered a hernia.
But a United insider told The Sun: "There was nothing Wayne could not do. He was whizzing around and flying into tackles.
''Not once did he wince. He's a tough cookie and this is not going to keep him out."