Chelsea are in talks with John Obi Mikel over a new deal at Stamford Bridge.
Mikel, who was involved in a protracted transfer battle with Manchester United before making the move to Chelsea, has established himself as a key member of Luiz Felipe Scolari's side this season.
The powerful midfielder still has three years to run on his current deal, but Chelsea are keen to tie Mikel down to a new long-term contract to ward off potential suitors.
Mikel's agent, John Shittu, says the player is happy at Chelsea and that a deal is close to completion.
"It has been an ongoing discussion for two weeks now and only a few details remain," Shittu told The Sun.
"The player is happy at the club and the club also want to commit him to a long-term contract.
"There is absolutely no problem and both parties are on the right page.
"In a few days everything will be concluded. The player is at the right club, where the fans appreciate him and he also feels at home.
"Many people questioned his decision to come here but I think now he has proved himself and shown he deserves everything."
Chelsea face Roma on Tuesday night and Mikel is keen for his side to secure qualification to the UEFA Champions League knockout stages as soon as possible.
"This is an away game at a very tough ground, it won't be an easy game - but we can fully wrap up qualification if we win," said Mikel.
Important"That makes it important for us. It's been a bumpy Champions League campaign for them this season and that will make them dig for a result.
"We know a win is crucial. It would afford us the luxury of concentrating on the league and other competitions without any distraction. Not so many teams travel to Rome to pick up a win.
"It has only happened on a few occasions but we are focused and determined to be in that classical league.
"It's key to maintain the momentum of the past two months.
"We are not only buoyed by the last result in the league but the fact that confidence and team spirit is on an unprecedented high.
"That is very crucial going into a big game like this."