The Tottenham striker, who scored twice at the Serravalle, said: "He finishes like a forward. There are not many like him, he loves scoring goals and, when he gets the chances, he doesn't miss.
"I don't know his situation at Chelsea but in my opinion he is someone you can't replace because of the amount of goals he has scored over the years.
"He is a special player. He can easily go on for another two or three years.
"At the end of the day you know you are going to get goals. You know what you are going to get from Frank and goals win games.
"I'm sure Chelsea won't get rid of him. He is a special player."
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