As with many a petty fallout, the breakdown of Diego Costa and Antonio Conte's relationship began over text, with the Chelsea manager reportedly sending his star striker a message in June that read: "Hi Diego, I hope you are well. Thanks for the season we spent together. Good luck for the next year but you are not in my plan."
Miffed by his boss' message, according to The Mirror Costa is now aiming to make life as difficult as possible for Chelsea and Conte as "revenge" for the text and the way he's been treated, and will only leave London for a return to his former club, Atletico Madrid, despite being close to a HUGE money move to China earlier in the year.
Conte wants to bring Romelu Lukaku, who was sold to Everton by former manager Jose Mourinho, back to Stamford Bridge, but the presence of Costa could prove to be an issue.
The hope, according to The Mirror, was that Costa would leave after Conte 'sacked' him via text, but the Brazilian, who has two years left on his £150,000-a-week deal at Stamford Bridge, will supposedly go "when he decides", despite being unhappy with life in England.
Speaking to the BBC after Spain's recent friendly with Colombia, Costa addressed his fairly messy club situation.
"I'm a Chelsea player, but they do not want me there," Costa said.
"Antonio Conte has told me by message that I do not follow at Chelsea and that's it. Conte said he did not count on me for next season."
"My relationship with the coach has been bad this season. It's a shame, I've already forwarded the message to Chelsea people to decide."
The moral of the story? Don't dump someone over text, Antonio.