The duo has been away due to recent international commitments and is set for their first appearances of the season.
“I just think that they are away that much with the youth squads they have forgotten where their real place is,” said Ferguson.
“Welbeck has been called away so much with every single England squad I don’t know if he is our player or their player!
“He is in every squad that is picked. The only squad he has not been in is the full squad.
“Macheda has been away with Italy youth teams all the time. He has hardly been with us.”
The duo are expected to start Wednesday evening’s Carling Cup third-round game against Wolves.
