Chelsea have opened talks with Emerson about a new deal.
Gazzetta dello Sport says the current agreement with the 25-year-old Brazilian runs to 2022.
The Londoners are now ready to increase his salary to €5m, plus bonuses. Now he earns €3.9m.
Emerson moved to Chelsea from Roma in 2018 for €20m.
Last season, he played 27 matches in all competitions, scoring once with two assists. This season he has appeared five times.