Why Paul Pogba was 'furious' at the length of his four-year ban？

On Thursday morning, Paul Pogba's future in football was cast into doubt as he received a huge four-year ban from the sport.

He tested positive for testosterone after Juventus' first game of the season and was given his punishment by an anti-doping prosecutor's office in Italy on Thursday.

Pogba's lawyers had rejected a plea deal and hoped to get their client a lighter sentence after claiming he had accidentally ingested the substance that caused the positive test, DHEA.

However, the prosecution did not believe Pogba's defence, and he has now been given a ban that could potentially end his career.

Here, Mail Sport answers all the questions regarding his ban, the drug used and his potential return.

Just a few hours after the news of Pogba's ban broke, the Frenchman released a brief statement that confirmed he will appeal the decision with sport's highest legal authority.

He wrote: 'As a professional athlete I would never do anything to enhance my performance by using banned substances and have never disrespected or cheated fellow athletes and supporters of any of the teams I have played for, or against.

'As a consequence of the decision announced today I will appeal this before the Court of Arbitration for Sport (CAS).'

Typically, when cases are brought forward to CAS, they will do a thorough check of the evidence and see if it complies with the rules of the World Anti-Doping Agency (WADA).

However, if CAS agree with Pogba and uphold an appeal for him, then WADA also have the right to an appeal - meaning the process could go on for months.

But, if CAS disagree with Pogba's claims - thus agreeing with the sanction handed down by the Italian national doping agency - then the appeal will come to an end.

The 30-year-old tested