Former world welterweight champion Kell Brook has fired a stark warning at Amir Khan following his UK rival's move to the same promotional stable.
Khan joined up with Eddie Hearn on Wednesday despite previous beef between the pair and Brook has now set his sights on a huge British super-fight.
It could be bad timing for 'The Special One' though as Brook recently moved up to 154 pounds where Khan has no intentions of treading yet.
The 31 year-old has moved to inform Khan that they will need to move quickly in order to get the fight over the line as Brook may be set to retire in the next twelve months after suffering broken orbital bones in defeats to Gennady Golovkin and Errol Spence Jr.
"We need to agree on a fight this year because I don't know if I will be boxing into next year, if I am honest," Brook exclusively told Sky Sports.
"I really do mean it. I am not getting any younger. I want a great year this year, no messing around, no play-time, I want big fights under my belt.
"I don't want to be talking this nonsense with Khan, him saying he wants it next year or whenever. It's got to happen pretty soon or I am done.
"I would just love to test myself against him. It will probably bring the best out of him and we will give something back to the fans for helping us throughout our careers.
"We'd perform like mad men in the gym and we'd come together and fight each other.
"There is only one - him. I will tell you now there is only one fighter who will fire me up and that's the one."
Brook makes his comeback against Sergey Rabchenko at the super-welterweight limit on March 3 but could potentially be able to drop back down a few pounds to meet Khan at a catchweight for the summer.
Despite setbacks for both in recent years, animosity alone makes it a must-watch collision for UK fans, which is the main reason why Hearn pursued the signing and pulled out all the stops to secure Khan to a contract with Matchroom Boxing.