He feels Greenwood has benefited hugely from seeing how veteran Cavani is still proving to be a handful at the age of 34.
Solskjaer said: “Being a centre-forward in the Premier League is probably the hardest position to play.
“At the moment, I think Mason is more suited to playing that wide role, dropping into pockets, finding space and running in behind.
“I don't want him with his back to goal and having two centre-backs up his backside.
“Playing with Edinson Cavani has been a top example. Edi leads by example even though the language barrier has made it a bit difficult.
“But Mason and Edi have struck a very good relationship.
“I can see that Edi really appreciates Mason's talent, his hunger and his willingness to learn.
“And in Edinson Cavani, he is learning from one of the very best.
“It's like when I speak about having Sir Alex Ferguson as a manager.
“If I couldn't learn from him then there was no point in going into management.
“If Mason, Marcus (Rashford) and Anthony (Martial) can't learn off Edinson then they can't learn from anyone."