Who do Liverpool need to sign to retain the title? Keep up with all the Reds news with our free daily newsletter Sign up Thank you for subscribing We have more newsletters Show me See our privacy notice Invalid Email

Roberto Firmino's move from Hoffenheim to Liverpool is under the microscope after FIFA's investigation into Paul Pogba's switch to Manchester United from Juventus.

The 25-year-old moved to Anfield in 2015 for £29million, establishing himself as a favourite on Merseyside.

But, according to Football Leaks: The Dirty Business of Football, Bundesliga side Hoffenheim received just £5.8million of the fee, with the rest going to owner Dietmar Hopp's company Transfair.

It is alleged that Hopp withdrew his business interest in the company just days later.

(Image: Liverpool Echo) (Image: Liverpool FC/Getty)

The claims come in the same week FIFA launched their investigation into Pogba's £89million move to Old Trafford last summer.

FIFA may be interested in the Firmino saga, but there is no suggestion that Liverpool are guilty of any wrongdoing.

The Brazilian is on a basic wage of £68,085 a week at Liverpool, but has earned a staggering £1.1million in bonuses since his move.

Firmino's first five goals in a season land him £25,000, with goals 6-10 netting him £45,000 and 11-16 £65,000.

(Image: AFP/Getty Images)

He has found the net on 12 occasions so far this term - if he reaches 16 goals each strike thereafter will bank him £85,000.

His six assists have landed him £190,000.

FIFA's investigation into the Pogba transfer relate to the amount paid to the Frenchman's agent, Mino Raiola.

Raiola banked £22.8million from Juventus and £16.39million from United for brokering the move.