John Terry thinks Romelu Lukaku could be the missing piece for Chelsea this season.

The Blues also believes his former teammate has 'something to prove' at Stamford Bridge.

"I think they are looking very good," Terry told Sky Sports.

"Listen, [Lukaku] is the one-piece missing even though they won the Champions League last year, they probably missed out [on the Premier League title] overall just because of that.

"I think bringing him in gives them that and he's shown that already.

"He's got something to prove at Chelsea as well, I know Rom very well."