Kell Brook can 'sleep well' after ending career with victory over Amir Khan

While Conor Benn was an option, it was Chris Eubank Jr who was the favourite to face Brook.

"I must say I'm really happy to hear the retirements of both Kell Brook and Amir Khan," Johnny Nelson told Planet Sport.

Amir Khan leaves the sport having won two world titles, a silver medal at the 2004 Olympics and an incredible resume that includes Marcus Maidana and Canelo Alvarez.

READ MORE: Canelo Alvarez to face Gennadiy Golovkin on September 17 in trilogy bout