(CNN) -- Italian champions Inter Milan completed the signing of Ghana midfielder Sulley Muntari from English club Portsmouth on a four-year contract on Monday, and then revealed no more players would be moving to the San Siro this summer.
Ghana midfielder Sulley Muntari has returned to Italy after only one season with Portsmouth.
The 23-year-old became new coach Jose Mourinho's second major signing for an undisclosed fee after the arrival of winger Mancini from Roma.
"Muntari will be our last acquisition, now we must work on reducing the squad as Jose Mourinho wants 22 players and three goalkeepers," Inter director Gabriele Oriali said.
The club's announcement almost certainly indicates that Mourinho's main transfer target Frank Lampard will remain at Chelsea for at least one more season.
British media have reported that Chelsea have relented and will offer the England midfielder the five-year contract that he requested. The 30-year-old also has the option of seeing out the final year of his current deal and joining Inter for free on a pre-contract agreement in January.
"I'm not disappointed by Lampard," Mourinho 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."
Muntari spent only one season with Portsmouth following his $14 million move from Italian club Udinese, where he had been since 2001. The English side are thought to have made a near 100 percent profit in selling him to Inter.
"I'm very disappointed to let him go. He's a terrific player and was a great signing for us," Portsmouth manager Harry Redknapp said.
"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, who was disappointed to miss out on a move to Manchester United when a 16-year-old, scored five goals in 33 appearances for FA Cup winners Portsmouth.
"It was a dream to play for a big team. I didn't even need to think about it for one second when I came to Inter," he told reporters. "I really wanted to wear this jersey, the shirt of a big club. I want to help this team achieve its objectives."
Muntari said he had become a better player after his short stint away from Serie A.
"They play a different style of football to the Italians there. I matured as a player and as a man. When I was at Udinese I was very young and hadn't mastered my position, that's why I got booked too much," he said.
"But I'm not a fool and now I've developed and matured. Now I know how to deal with situations on the pitch, the coach won't have any problems."