There were fears that Rooney would miss the match at Old Trafford after he came off in the 88th minute of United's 3-0 defeat to Everton last Sunday following a kick to the knee.
But speaking to MUTV on Friday, manager Louis van Gaal confirmed his captain is available to play against the Baggies.
"Rooney is fit to play, it (the injury) was not so heavy as we expected," Van Gaal said.
Source : PA
Source: PA