(REUTERS) - Everton striker Romelu Lukaku is on the brink of a sealing a new deal with the Premier League club, the Belgian's agent Mino Raiola has said.

The 23-year-old, whose current deal expires in 2019, had been strongly linked with a return to former club Chelsea during the close season.

"With Everton, we have 99.9 per cent reached terms. It is a question of putting the details on the paper," Raiola told talkSPORT.

Everton, who are ninth in the league, face champions Leicester City on Monday (Dec 26).