The lid on the special benefits Daniel Agger received when he exited his club Liverpool has been opened.

The strange deal between the Danish centre back and his boyhood club Brondby was thrown open after The Times published an investigation on the terms of his contract.

The report says Agger negotiated that the club advertise his sewage company during home games. Agger owns a dredging and sewage company called KloAgger with his brother and a friend. KloAgger would be emblazoned at the Brondby Stadium during home games in a bid to market the business. The terms of his contract say the business would have a LED system displaying the company and it products during matches. The length of the advert would be 215 metres, displayed for 27 seconds eight times during games.

Many have raised eyebrows to the terms of the contract, particularly as details of former teammate Mario Balotelli’s contract hit the news. The French player was promised £1 million in bonuses if he was well behaved during his time at Anfield.

“If during each season of the term of this contract the player is not dismissed from the field of play on three or more occasions for violent conduct, spitting at an opponent or any other person, for using offensive, insulting or abusive language and/or gestures and/or for dissent by word or action ... then on the 30th June at the end of each season he shall receive bonus payment of £1m,” Balotelli’s contract details read.

This was aside £85,000 in weekly wages and £25,000 for each of the player’s first five goals in the Premier League or European football that is £50,000 for each goal.

After eight years at Anfield, Agger got a good commercial deal when he signed with Brondby in 2014 but many have questioned such contracts that Kop stars get.