The pair are set to be on the bench after returning to training this week, but the game comes too soon for the likes of Dean Henderson and Bruno Fernandes.
"We're adding more and more players now of course," Solskjaer told manutd.com. "Dean is back in training which is good for us, he won't be ready for the Brentford game.
“Diogo and Donny have trained and they're ready to play a part in the game, I would think they'll be subs.
“Bruno is back in training. He's not ready to join the Brentford game yet, but he's not too far."
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