With Emmanuel Adebayor expected to leave White Hart Lane this summer, 30-year-old Defoe will be the only senior striker left.
He said: “I’m a forward but I can’t be the only forward at a club. Over the years, the clubs who’ve won titles have had several strikers.
"When Manchester United won the Treble in 1999 they had unbelievable forwards like Andy Cole, Teddy Sheringham, Ole Gunnar Solskjaer and Dwight Yorke — you need that.
“If you want to do well it’s important to have competition.
“It will definitely help us to bring more goals into the team.”