Chelsea are poised to hand midfielder John Obi Mikel a bumper five-year deal.
Mikel is in the final year of his current contract at Stamford Bridge but the Blues are keen to hold on to the 25-year-old and are willing to offer him new terms.
Talks have been ongoing for some time and Mikel's agent John Shittu now claims common ground has been reached.
"Mikel will soon sign a new five-year contract with an improved salary and we are just about finalising the details of it," Shittu told the Sun.
"Mikel is one of Chelsea's most consistent performers and the club agrees with us he deserves a new and improved contract. He has a year left and Chelsea have decided to add four more years to it."
The Nigeria international arrived in West London from Norwegian side Lyn Oslo in 2006 under a cloud of controversy after Manchester United had initially claimed to have signed him.
He has enjoyed mixed success since then, breaking into the team under Jose Mourinho but polarising opinion among subsequent managers.
After falling out of favour with Andre Villas-Boas towards the end of his reign, Mikel was restored to the role of first-team regular when Roberto Di Matteo took charge and produced arguably his two finest displays in a Chelsea shirt in the Champions League semi-final second leg against Barcelona, and final triumph against Bayern Munich.