Sunderland manager Steve Bruce has revealed that strikers Asamoah Gyan and Danny Welbeck are likely to miss the rest of the season through injury.The duo were both withdrawn with hamstring injuries during Saturday's 4-2 win against Wigan Athletic in the Premier League."We're unlikely to have Gyan and Welbeck for the rest of the season," Bruce told BBC Newcastle."That was disappointing as we're training with 13 men now."Source: BBC