Sevilla striker Carlos Bacca has claimed that his club manager Unai Emery has changed him as a player.
The Colombian international joined Sevilla from Club Brugge in 2013 and has netted 42 goals in 95 games for the club.
Bacca's form has made him one of the most in-demand forwards in European football, but the 28-year-old has revealed that he is enjoying working under Emery.
"Emery is a very demanding coach who never lets you relax. He is always trying to get the best out of you and that's been reflected in my performances," Bacca told UEFA.com.
"There are qualities I've now added to my game, like defending more and helping the team. At previous clubs my role was more about scoring but at Sevilla I also have defensive duties.
"Sometimes other teams can get on top of you but by defending you can get better opportunities in attack, and Emery has showed us that. I'm more involved in the game now. I play further back, find space better and get more chances in front of goal."
A number of Premier League clubs, including Arsenal, Tottenham Hotspur and Manchester United, have been linked with a move for the forward.