Inter Milan striker Romelu Lukaku has described Zlatan Ibrahimovic as a "great champion and professional" ahead of the Milan derby on Sunday.
The 38-year-old returned to AC Milan for a second spell last month and is in line to start against Lukaku's side at the San Siro.
Speaking in an interview with Tiki Taka, the Belgian said: "It will be nice to play against him. He is a great champion and professional.
"For me it's normal that he can do those things at the age of 38."
Lukaku and Ibrahimovic played together at Manchester United and face off as Inter look to close the gap to Juventus at the top of Serie A.
The Sweden international has scored twice in five Serie A matches since his return, with his AC side now sixth.
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