Manchester United loanee Donny van de Beek was subbed on and then subbed off again last time out with Eintracht Frankfurt’s head coach insisting that the Dutchman cannot play a full 90 minutes. After a slow start to life in Germany – completing only five passes before being hauled off at the break against Mainz and then left out of Frankfurt’s Europa League squad – this was the last thing Donny Van de Beek needed. The £34 million Manchester United misfit replaced the injured Hugo Larsson early on during last weekend’s 1-1 home draw with Bochum. Van de Beek was then brought off again around ten…