Vaz Te will have been consigned to the inevitability of limited opportunities before Sam Allardyce turned to the 26-year-old for Tuesday night's Capital One Cup tie, in the midst of a striker crisis.
"He keeps on telling everyone that he creates chances and scores and that's what the manager wants - people to put the ball in the back of the net," said McDonald.
"That's a knock on the door for the manager, he's available on Saturday against Hull and gives the manager a nice little problem.
"You have to forget what happened in the past, maybe it was bad advice, but he's a genuine lad who just wants to play.
"He wanted to go and play somewhere but he got a game here and scored the winner which is great."