Lisandro Martinez will be assessed after appearing to suffer a knee injury during Manchester United's 3-0 win over West Ham United.
A fine display, capped by goals from Rasmus Hojlund and Alejandro Garnacho (2), made for a very positive afternoon at Old Trafford, but there was obvious concern for Martinez from team-mates, staff and supporters.
The Argentina international, not long back from a foot problem, tussled with Vladimir Coufal by the touchline and got his leg trapped by the Hammers' full-back.
