Watch: McGregor spars Van Heerden as Mayweather talk grows

Chris Van Heerden Conor McGregor

Chris Van Heerden

UFC star Conor McGregor put in a training session at the Tony Jeffries Box ‘N’ Burn gym in California this week as speculation regarding a possible clash with Floyd Mayweather continues.

McGregor, 27, has been in discussions with the undefeated pound for pound king for the last few weeks about a multi-million dollar welterweight bout and has begun sharpening his tools accordingly.

The Irishman began his career in the sport as a youngster before switching his hand to MMA at 16 with considerable success – but is now set for a spectacular return at the highest level possible.

In preparation, McGregor shared a few rounds with former IBO title holder Chris Van Heerden as the ‘Notorious’ one gets reacquainted with only using his fists once again.

Video filmed at Box ‘N’ Burn