Antonio Conte’s Chelsea are six points clear at the top, and have won their last 10 games in the top-flight.
Eden Hazard missed last night’s win over Sunderland with injury and Nemanja Matic was rested.
Willian and Cesc Fabregas came in for the pair and Redknapp says that quality off the bench puts them above the rest in the title race.
“Chelsea are obviously favourites with the way it’s going”
Harry Redknapp on Chelsea
“They’ve got that option (to play Fabregas), they’ve got a strong squad,” he said on talkSPORT.
“They can bring in Willian when Hazard’s out. They’ve got such strength in depth.
“Chelsea are obviously favourites with the way it’s going. But Manchester United are putting themselves back in the picture for the top four.
“The top four is wide open. Two teams are going to miss out who you think should be in there.
“Chelsea have got a great run of games as well.
“The next four or five games they can keep winning and could create a decent gap for themselves.”