The Belgian was furious with his treatment by Villas-Boas during his time at Chelsea, but the two have since buried the hatchet.
Villas-Boas has been impressed with how he has developed since his successful loan spell at West Brom last term.
"The player did extremely well last season and has continued to do well for Everton. The potential is there," Villas-Boas said.
"We all recognise he can become an influential striker in the future.
For the big stories and the banter follow us on Twitter: @tribalfootball