The Blues head into Wednesday’s clash with Reading on the back of the weekend’s 2-2 FA Cup draw with League One Brentford, which followed a League Cup exit at the hands of Swansea City.
But Terry has warned his team-mates that they will have to step their game up if they are to finish in the top four and qualify for Europe’s elite club competition.
“It’s disappointing going to Swansea and not scoring over two legs, then being lacklustre [at Brentford],” Terry told ChelseaTV.
“We came [to Brentford] and didn’t create too much. Fair play to them, they played well but we need to liven up a bit and realise the importance to the fans and the club.
“Champions League football is a must next season. It’s difficult but we have a squad and it’s down to the players who come in to rotate and play well.”