West Ham boss David Moyes is keen to strengthen his backline this month and sees the 29-year-old as an attractive option after losing his starting place at United.
Maguire has started just two Premier League games since August under Erik ten Haag.
Ten Haag’s decision to play left back Luke Shaw Being at the heart of the defense in recent games has effectively made Maguire the fifth-choice centre-back, and West Ham will be hoping to use his lack of game time to tempt him. England International move to London.
However, sources have told ESPN that United are reluctant to part company this month, and Maguire is understood to be willing to fight for his place and review the situation in the summer unless Ten Haag says otherwise.
United are still involved in four competitions, and Maguire believes that as things stand there is still a chance he can revive his fortunes in the coming months.
Another relevant factor is Moyes’ uncertain future at West Ham. The 59-year-old is under increasing pressure as his side drop to 18th in the table having lost six of their last seven Premier League games, and a managerial change will prompt the club to revise their transfer targets.