The Danish goalkeeper was not in the matchday squad for last night's 2-2 Premier League draw at Upton Park, sparking fresh rumours that he could be lining up for the Hammers next season.
West Ham were linked to Lindegaard back in March when it was reported in Denmark that they had enquired after him and his absence from the bench, when he was fit enough to sit there on Sunday, could be more than just coincidence.
David de Gea's growing presence in goal has reduced the 29-year-old's chances while reports that keeper coach Eric Steele is watching Brentford's Simon Moore may indicate that his time at Old Trafford is up.
Lindegaard has not made a first-team appearance for United since December, when he was not at his best in a 4-3 win over Reading, and recently admitted that his situation is not ideal.
He said on his Betfair blog: "I'm not idiot - I am aware that my situation is not the ultimate dream scenario. But I do my very best every day to keep me as sharp as possible both for myself and for the team. When one day I do play again, it would be inexcusable not to have prepared myself in the best way as possible."
Lindegaard has not played for Denmark in over two years and has lost his place in the squad to Leicester City's Kasper Schmeichel.