The MEN report that United have been tracking him.
UNITED could be looking to step up their pursuit of another senior goalkeeper with Schalke's Manuel Neuer on the radar. German sources indicate the Reds have already been monitoring Schalke's highly-rated 23-year-old.Neuer was wanted by Bayern Munich during the summer but Schalke blocked their Bundesliga rival's interest, though they did say that `crazy money' might force a rethink.
The 6ft 4ins Gelsenkirchen-born keeper helped Germany win the UEFA Under-21 championships in Sweden during the summer when they beat Stuart Pearce's England side 4-0 in the final.
In 2007 he was rated the best keeper in the Bundesliga and then in 2008 was ranked the top keeper in the Champions League.
The `crazy' cash that could trigger a sale by Schalke is understood to be around £25m.