- I promise one thing - this will be followed up properly and then measures will be taken in the form of going through our routines, says Robert Falck, who since 2019 chairman of AIK Football, to Fotbollskanalen.

The Swedish Football Association will also review the deal, according to the federal lawyer Anders Hübinette.

- We have read DN's article and it is serious information.

There must be no so-called bulvan or goalkeeper arrangements, says Hübinette.

Dagens Nyheter reports on Sunday that AIK hired a letterbox company when they sold Nabil Bahoui to Al Ahli, Saudi Arabia, in 2015.

An invoice for Bahoui's transfer was found several years later, in a drug craze in southern Stockholm in 2019, the newspaper writes.

The invoice concerned "development of negotiation strategy and terms" and was dated April 2018 from a company in Tallinn, BlueBlueSky OÜ.

No trace

The customer was the Swiss football agent Marco Lichtsteiner's company Palm Eleven AG and the sum on the invoice was 80,000 euros, corresponding to 800,000 kronor.

According to DN, BlueBlueSky OÜ is run by two Swedes with a "long criminal past".

According to the information AIK provided to the Swedish Football Association, it was a Scottish company, SPM Sport Agency, and a named woman who was the club's representative in the transfer.

No other traces of the company and the woman are found in the football association's register, where transfers are registered.

SPM Sport Agency was founded by two anonymous companies in Belize in Central America, and is according to DN a now defunct mailbox company.

Björn Wesström, today club director, was the sports director of AIK during the transfer.

For DN, however, he confirms that Palm Eleven was paid for the sale when the company had an agreed ownership in the player's financial rights.