"I think we are going to have to win the lot," Redknapp said. "We are going to need 12 points.
"It is is going to be very tight but we are capable of doing that."
Arsenal are three points clear of Newcastle in third while Spurs are further three back with Chelsea one point behind them. Newcastle, Spurs and Chelsea all have a crucial game in-hand on the Gunners however.
"I don't see Chelsea losing too many and Newcastle are going great," added Redknapp. "What they have done is a miracle - what Alan Pardew has done there has been fantastic.
"But Arsenal still have to have to go to Stoke and West Brom so it is not all over yet. We will have to wait and see."