straight to your inboxFormer Manchester United defender Rio Ferdinand believes his old club will not be able to compete for the Premier League title if they do not sign any more players before the 11pm Monday deadline.United have made just one signing - Donny van de Beek from Ajax for £40m - so far during this window, but have tried to add to their squad.Jadon Sancho has been a target for Ole Gunnar Solskjaer throughout the window, with United set to make one last-ditch attempt to sign the