The Madrid investigating judge, Pablo Ruz, issued a written summons for Rosell and the football club, through its legal representatives, to appear in his court as suspects on June 13.

The Spanish taxman lost out on up to 11.8 million euros in total, the summons showed.

A tax office report cited by the judge listed lost revenues of 2.4 million euros in 2011, 6.8 million euros in 2013 and as much as 2.6 million euros in 2014.

The judge summoned Barcelona's auditors, Deloitte, to testify as a witness on the same day.

Rosell resigned from Barcelona in January as he faced legal action accusing him of misappropriation of funds for not disclosing the destination of all the money spent on bringing Neymar to the club last summer.

Subsequently, the club revealed all the figures and clauses involved in the deal, which totalled 86.2 million euros.

As a result Barca were then indicted for alleged tax fraud linked to the signing.