The Red Devils’ resurgence has been halted by five defeats in their last seven games, which have sent them crashing out of the Champions League and the FA Cup.
Solskjaer’s men are also struggling to make the top four and face Everton, Manchester City and Chelsea in the next eight days.
The Norwegian warns there is ‘no hiding place’ for his under-performing stars and issued a wake-up call ahead of the club’s run in.
“I’ve learned a lot about them over the months here now and you get to know them,” he said.