Filippo Inzaghi vowed to continue playing as long as he felt in form after scoring twice and netting his 300th career goal in AC Milan's [ Images ] 5-1 Serie A win at Siena on Sunday.

The 35-year-old, whose contract runs until June 2010, has not ruled out signing another deal, although matching Brazilian Romario's reputed 1,000-plus career goals looks impossible.

"I'll try to carry on as long as I'm playing like this. Knowing myself, it will be a difficult day when I stop," Inzaghi told Sky television after two trademark goalpoaching strikes.

"I try to work like I always have. I know the things that keep me fit. I must say the coach (Carlo Ancelotti [ Images ]) is great because he lets me have a breather when I need it as at nearly 36 I can't train all the time."

The much-travelled striker, who scored his first professional goal for Leffe versus Siena in the third division in 1992, held up a shirt with 300 on the back after reaching the landmark against the same side.

"I prepared it yesterday because I hadn't realised that my first professional goal was against Siena so it was destiny that my 300th would again be against Siena," he smiled.

The former Italy [ Images ] and Juventus [ Images ] forward has grabbed his chance back in the first team having been little used since scoring both goals when Milan won their seventh European Cup by beating Liverpool 2-1 in Athens in 2007.

"My team have given me a great hand. Strikers live for things like this but results like when Milan won the Champions League [ Images ] that evening in Athens offer much more satisfaction," added Inzaghi, who scored a hat-trick in a 3-0 win over Atalanta last weekend.

He picked out Milan's 19-year-old striker Alberto Paloschi, on loan at Serie B side Parma, as a potential successor.

"I see my desire in him. I hope one day I can give him my number nine shirt."