Frank de Boer believes 'it's a pity' Manchester United forward Marcus Rashford plays under manager Jose Mourinho.
Rashford scored both goals in United's 2-1 win over rivals Liverpool on Saturday in what was a rare start for the 20-year-old.
The former Crystal Palace manager was speaking on BT Sport's Premier League Tonight on Saturday.
De Boer said: 'It's a pity that the manager is Mourinho because normally he's an English player you want to give him time and he can then make mistakes.