The former Udinese midfielder on Monday put pen to paper on a four-year contract with the reigning three-time Italian champions following a successful year at Portsmouth.

The 23-year-old arrived on the English south coast last summer for £7million and his move to Inter is thought to be worth nearly double that amount.

"I would like to thank Inter for allowing me to return to Italy," said Muntari. "I am delighted.

"I have grown up as a player and as a man in the Premier League. There you play a different type of football.

"I really wanted to wear this [Inter's] shirt, the jersey of a top club. I want to help this team reach their aims this season."

The Ghana international is also looking forward to working under former Chelsea manager Jose Mourinho.

"I faced his team once and I saw how his team played," Muntari said. "I lost that game against Chelsea 1-0 and they played very well."

Muntari celebrated an FA Cup victory with Pompey which guaranteed the club a place in next season's UEFA Cup, but he was nevertheless eager to return to Serie A.

Muntari accepts, however, that he will not be able to just walk into the team.

"It was my dream to play at a great club," Muntari continued. "When the offer from Inter arrived I didn't think twice about working under him [Mourinho].

"Inter is a great team and my dream was to come to this type of club.

"I do not pretend that I will play every game because I know there are many talented midfielders in the team.

"I just want to help my team and win titles."

Muntari also insisted the on-field indiscipline which was such a theme of his five-year spell at Udinese is a thing of the past.

"The coach does not need to worry," he said. "I have matured.

"When I was at Udine, I was young and inexperienced and I was given a lot more bookings. But I'm not stupid and I have grown up. Now I know how to control myself on the pitch."

Portsmouth manager Harry Redknapp admitted he was "disappointed" to lose the combative midfielder.

He told www.portsmouthfc.co.uk: "I'm very disappointed to let him go. He's a terrific player and was a great signing for us. He's a really nice lad as well.

"He can't be a bad player - Inter don't buy bad players.

"He helped us achieve what we did last year.

"But Inter have come in and made a big offer which allows us to strengthen in a couple of other positions."

Muntari becomes Mourinho's second major capture after the signing of Mancini from Roma, and Inter have revealed his arrival will bring an end to their summer spending, suggesting Chelsea's Frank Lampard will not be joining the Nerazzurri.

Inter director Gabriele Oriali said: "Muntari will be our last acquisition, now we must work on reducing the squad as coach Jose Mourinho wants 22 players and three goalkeepers."

Mourinho, meanwhile, hinted Lampard will now remain at Chelsea.

"I'm not disappointed by Lampard," he said.

"The important thing for a player is to do what makes him happy. If his decision is to stay at Chelsea I accept that."