Saha has not started a game for the Red Devils since February 24, scoring in a 3-2 win over Reading.
Knee problems have blighted his time at United but he has a healthy goalscoring record. United were set to sell him at the end of last season - but more injury problems put paid to that.
Now Saha, 29, wants to resurrect his Old Trafford career, starting against Tottenham on Sunday.
The French striker has been training at full pelt for 10 days.