West Ham United are planning a swoop for Romelu Lukaku as they look to partner him with Andy Carroll next season.
Sullivan told The Mirror: "Lukaku would be a loan again. We'd maybe buy him a year later if Chelsea decide they don't want him.
"If we sign Andy, it will be a record signing for the club. Having said that, he is just our type of player and it has been an exciting time watching him.
"He and Romelu would be devastating. The best strike-force outside of the top six or seven."