Cristiano Ronaldo is convinced his move to Manchester United will be a "big thing in the next three or four years" and insists he is "not here for a vacation".

The former Real Madrid forward netted 118 times in 292 appearances across all competitions for United, lifting three Premier League trophies and the Champions League during a glorious six-year spell between 2003 and 2009.

The Portugal captain returned to Manchester earlier in the week for the first time since his arrival from Juventus, after breaking Ali Daei's all-time international scoring record against the Republic of Ireland with his 110th and 111th goals for his country.

Speaking exclusively to former team-mate Wes Brown in an interview with United's official website, Ronaldo declared his return is not just for nostalgia.

"I am not here for a vacation," the 36-year-old said.

"As I told you, before was good, winning important things and I wore the shirt before many years ago, but I am here to win again.

"I am capable, me and my team-mates. I am ready to go. It is a good chance for me, for the supporters, for the club, to get one step ahead.

"I am ready and I think I will be a huge thing in the next three or four years."

Ronaldo is in line to feature against Newcastle United on Saturday, the Magpies being the only club the returning star managed a Premier League hat-trick against in his first spell in Manchester.