The club did not reveal Lukaku´s wages nor the fee paid to Premier League side United, reported in Britain to be in the region of 80 million euros ($90 million).
Even as Romelu Lukaku completed his move to Inter Milan yesterday for a reported £73 million (S$122.5 million), former Manchester United players Phil Neville, Paul Scholes and Ryan Giggs had one last dig at the striker.
"Last year was a great experience working with them because they are hungry, they want to learn, they ask questions on the training pitch and I love that", Lampard said.
The Belgian has signed a contract until 2024 with the Italian giants.
Lukaku hit the ground running in the north-west but has slowly fallen out of favour at United largely due to issues off the pitch, although goals have also dried up over the last 12 months.
There was a chance that Lukaku wasn't going to be the only departure from Old Trafford yesterday.
Drinkwater, 29, becomes Burnley's fourth summer signing after making only five Premier League starts since joining Chelsea in a £35million deal in August 2017. "I'm here to bring the Nerazzurri back to the top", Lukaku said in a release by the club.
"I'll be honest with you, I never felt as if he was a United centre forward".
Inter Milan have so far been unable to meet United's valuation of their striker.
"I think there was always that feeling of was he fit enough?"
Youngsters Angel Gomes and Mason Greenwood have both been allocated numbers in the senior squad, with the pair set to wear the shirts which they donned during pre-season.