The 22-year-old put in a string of strong performances at St James' Park, and the player himself is keen to continue working with Rafa Benitez, but Newcastle could be priced out of a move.
There is interest from both sides with the 'Magpies' are keen on making the loan move permanent, but uncertainty over the future of Benitez and a possible lack of funds have left them in a weak negotiating position.
He's under contract at Chelsea until 2020, but has only made five Premier League appearances for the 'Blues' since joining in 2015.
Since January he played 13 times for Newcastle, providing two assists to go with two goals.