Tony Ferguson is No.2 contender in the lightweight divison (Picture: Getty)

Tony Ferguson has warned Conor McGregor he has to fight him or vacate his UFC lightweight title.

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McGregor is currently preoccupied with fighting boxer Floyd Mayweather but is expected to return to the UFC and defend his lightweight strap at some stage.

Ferguson is the No.2 challenger in the division, but with Khabib Nurmagomedov sidelined after a weight cut went wrong, the American is the top ranked contender currently ready to fight.

McGregor was stripped of his featherweight title for inactivity and Ferguson believes the Irishman should vacate his lightweight strap.

‘Conor McGregor, better get that cardio right son, can’t run forever,’ said Ferguson on his Twitter.


‘Defend or vacate, that bit** is mine, don’t trip just drop it and walk away.’

Ferguson is in limbo after seeing his interim title fight with Nurmagomedov get scrapped the day before the bout.

Conor McGregor won the lightweight title in November (Picture: Getty)

Nurmagomedov fell ill during his weight cut and was forced to pull out of the fight.

Ferguson seems to have his eyes fixed on a real title shot against McGregor, but could be waiting until 2018 with the Irishman targeting a September clash with Mayweather.

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