Ademola Lookman met a 67th minute cross from Harvey Barnes to force an own goal from Gianluigi Mancini which ensured parity on the night.
Inter Milan has moved a point ahead of AC Milan in the race for the Scudetto having played the same number of games.
“We are stronger than them. It is unacceptable to have won only in the fourth game against Bodø,” said Mourinho.
Juventus moved up to 38 points in fifth place, six points ahead of eighth-placed Roma.
Jose Mourinho suffered one of the biggest defeats of his coaching career as AS Roma stumbled to a shock 6-1 loss at Norwegian champions Bodo/Glimt.
Lukaku announced the development at a press conference on Wednesday. The shirt became vacant following Tammy Abraham’s exit from Chelsea.
Tammy will be leaving Stamford Bridge having scored 30 goals in 82 appearances after coming through the Blues academy.
The AS Roma Academy has appointed ex-Golden Eaglets and Flying Eagles coach John Obuh as technical director.
“A great champion who has won trophies at every level, José will provide tremendous leadership and experience to our ambitious project.”
This result has sent Antonio Conte’s team to the top of the standings above AC Milan.
