The 19-year-old highly rated goalkeeper has just 18 months remaining on his current contract, and both the Manchester clubs are keeping tabs on his current contract situation.
The Hammers are keen to tie down the future of the young stopper and are desperate to hand him a new deal this season.
German side RedBull Leipzig are also reportedly tracking Trott, who remains the Hammers’ third-choice goalkeeper behind Adrian and summer signing Lukasz Fabianski.