Cavani made his debut in Saturday's draw with Chelsea.
"The Uruguayan's 33-year-old legs will see to that!
"He came on yesterday for his United debut and almost scored with the first kick of the ball he had.
"Henrik Larsson is one such exception that I can think of.
"And if Cavani has the strong influence the great Swedish centre-forward had in his brief stint at Old Trafford, then he will do fine.
"But United signing a 33-year-old centre-forward? Sorry, it's not for me."