Former Chelsea boss Frank Lampard admits he was unsure of Kai Havertz's best position when they first worked together.

Havertz left Chelsea in the summer for Arsenal.

Lampard recalled on Sky Sports: "[My sacking] Hurt a lot because we were working towards something and bringing in those players changed the aspects.

"When we brought players in I had different problems – coaching problems. What's going to get the best out of Timo Werner, is he a No9?

"We've still got Tammy Abraham and Olivier Giroud. Kai Havertz, what's his best position?

"It was a club recruitment policy, there were players I wanted. Ben Chilwell was big for me."