On 8 September 2010, he was suspended by UEFA along with team-mate Vukašin Poleksić, as a match between Debrecen and Fiorentina in the 2009-10 UEFA Champions League was investigated for match-fixing.
On 12 May 2012, Mészáros won another Hungarian League title with Debrecen after beating Pécsi MFC 4-0 at the Stadion Oláh Gábor Út.