Bayern Munich misfit Luca Toni is determined to score goals at Roma to turn his loan stay into a permanent transfer.
The striker has switched to the Serie A side for the rest of the season after falling out of favour at the Bundesliga outfit, with the Giallorossi paying him 3.1million euros for the duration of his stay.
Claudio Ranieri's side also have the option to buy the striker outright and Toni is determined to knock in the goals to earn a permanent switch.
The striker, who will wear the number 30 shirt, told the press conference at his official unveiling: "I'm extremely happy to be here. It's the club that I always wanted.
"I'm delighted and I will try to help the coach and all the squad achieve our goals.
"I have great motivations, as soon as I heard that Roma wanted me I accepted immediately.
"I'm up for the challenge, it won't be easy but we'll see what happens.
"I have six months to show that I am a Roma player. I have to score goals.
"I will try to deserve my place because there are already great attackers at Roma."
The move sees Toni reunited with Francesco Totti, his strike partner in Italy's 2006 World Cup winning side.
Toni added: "Around me I felt so much affection from the sporting director (Daniele) Prade, the president Rosella Sensi, from Francesco Totti, (Simone) Perrotta, (Daniele) De Rossi.
"I am their friend and I have shared so many emotions with them in the national side.
"Feeling their affection made the choice a lot easier. I chose Roma because I really liked the idea of playing with Totti as well as the drive that a city and a set of fans like Roma's give you."
But Toni, who has struggled with injuries recently, refused to get involved in a war of words with Bayern coach Louis van Gaal.
He said: "I have a splendid relation with the Bayern directors who understood my desire to come to Roma.
"I had problems with Van Gaal but anyway that's in the past and I don't want to talk about it any more.
"I'll talk about it again in June if I am still at Roma, but I have to prove myself.
"Before anything I want to earn my place and score a lot of goals for the fans and my team-mates.
"Physically I'm fine, the injury is now just a memory."
Toni will also be aiming to revive his hopes of playing for Italy at this summer's World Cup but insists that is not the sole reason for his decision to return to his homeland.
"I didn't come to Roma just for the World Cup," he said. "Now my aim is to score a lot of goals and play well in the Giallorossi shirt.
"Then we will see what happens in June."