Van de Beek has yet to hold down a place in the side since his arrival from Ajax back in September 2020 and with Academy graduate Greenwood still only 19, the manager feels there is more to come from both over the next nine months or so.
The Reds manager has assured supporters that the pair are doing all they can in terms of their own physical development.
“I think it’s a combination of many things. You can say with Donny, he’s had the summer away, he was injured and he’s had his own fitness regime and programme,’’ explained Solskjaer.