Sunderland and Fulham are also chasing the £12million-rated hitman.
“I like Peter. I’ve signed him several times and he’s a top player,” Redknapp told Sky Sports News.
“He’s a player that we could be interested in, but we’ll have to wait and see.
“Portsmouth obviously want to sell him now, they’ve accepted offers for him, so if they want to sell him, we’d be interested.”