Good for West Ham, they're my local club and they seem to have good competition with Liverpool so I don't mind them becoming a little stronger.
Rossi is very young and far from "drying up". He will return to United as an experienced player and willing to prove himself.
Rossi, who joined Newcastle United on-loan this week, told Corriere dello Sport: "I thought it was a joke and instead it turned out to be true.
He added: "There are exceptional players at Old Trafford. Paul Scholes and Ryan Giggs are phenomenal."
Rossi hopes for a regular action at Newcastle and said: "I want to play as a much as I can and to score just as many goals."