Blues boss Antonio Conte is looking to make several additions to his squad as he prepares for life in the Champions League next season and the Italian international is said to be high on his wanted list.
Reports claim that Chelsea are ready to offer £55million and PSG are willing to cash in. However it is the player himself who could pull the plug on the move.
Verratti has only just penned a new long-term deal with the Parisians, and is said to be reluctant to join Chelsea as first-team opportunities could be hard to come by.
The Italian wants regular game time guaranteed and although that may be impossible, the potential departure of Cesc Fabregas could give him a chance to establish himself.
Everton midfielder Ross Barkley is also an option for Conte, should Verratti opt to stay in France.