BOXING: DAVID HAYE wants to fight a Klitschko for the world heavyweight title - and has told Vitali and Wladimir to "flip a coin" to decide which one gets to step into the ring with him.

The 28-year-old Londoner produced an explosive fifth-round stoppage victory over solid American Monte Barrett at the 02 Arena on Saturday night, in his first fight as a fully-fledged heavyweight.

Haye - who moved up a division, having established himself as undisputed cruiserweight champion earlier this year - knew an impressive performance was needed against Barrett as he seeks the fastest route to a world title shot.

He certainly delivered, knocking Barrett down five times and being controversially floored himself in a thrilling contest at the former Millennium Dome.

Now he is ready to turn his attention to WBC champion Vitali Klitschko and brother Wladimir, IBF and WBO champion.

Boxing politics will dictate which of the Ukrainian brothers Haye fights next, with Vitali and Wladimir making mandatory and voluntary defences soon.

Haye has no preference. "Flip a coin! I don't care. They are both very good in their own way," he said.

Haye sent Barrett to the canvas with a left hook and again with a right hand in the third round. Barrett was down twice in the fourth, too, as Haye displayed his range of shots with striking left hooks, jabs, right hands and uppercuts.

In the fifth round Haye lost his balance after being caught by a mediocre Barrett punch, but was hurt when the American hit him while he was on one knee - returning the favour after Haye landed a late blow following an earlier knockdown.

The big finish came soon afterwards, Haye jolting Barrett with a left hook and moving in with a fierce right-left combination. The veteran crashed to the floor, and, when it became clear he was struggling to recover, referee Richie Davies waved off the count.