Chelsea are said to be furious over the treatment of winger Christian Atsu whilst on loan at Everton.
The Daily Express reports that the Ghanaian international is unhappy at Goodison Park after playing just 70 minutes in the Premier League in the last three months, and his parent club are threatening to recall him before sending him out to Sunderland in another short-term deal.
Jose Mourinho would have been hoping for much more when he agreed to let the 22-year-old join a Premier League rival for the season, but it's only been disappointment for all parties heading towards the New Year.
The same paper report claims both Roberto Martinez and the Toffees' faithful have been unimpressed with what they've seen of Atsu thus far, with inconsistency the reason for him falling down the pecking order on Merseyside.
However, the Blues will believe games is the only way for the former Porto starlet to get out of bad habits and up to the expected standard at Stamford Bridge.
With that in mind, it's no surprise to hear that Chelsea are far from happy with the situation and considering a separate deal that would see him come under the wing of club legend Gus Poyet.
Poyet's side made a good impression against the Blues only yesterday (Saturday), with Sunderland managing to hold Chelsea to a blank for the first time this season in a 0-0 draw at the Stadium of Light.
Whether the Uruguayan's ties in west London still stretch as far as transfer dealings remains to be seen, but his connection with the Blues certainly won't be a hinderance if the Black Cats do indeed try and strike a deal.
For Atsu, who arrived at Chelsea in September 2013, a move seems imperative. He's further away from Mourinho's first team than ever, and needs to be playing football to stand any chance of breaking into the first team.