Cerezo Osaka's Diego Forlan believes Shinji Kagawa is not at fault for his disappointing season at Manchester United, with the 2010 World Cup MVP and top scorer attributing the Japan international's struggles to circumstances beyond his control at Old Trafford.

Forlan, a former United player who weathered his own share of storms in two-and-a-half seasons at the club, said Kagawa has the talent to cut it with the three-time European champions but simply hasn't been used as effectively as he was by Alex Ferguson in 2012-2013.

Ferguson's handpicked successor David Moyes has given Kagawa just 12 league games with seven left to play in the campaign, and he hasn't scored once in any competition.