 He joined Danish Superliga side SønderjyskE on 31 August 2008 and left the club when his three-year contract ran out after the 2010–11 season.He then had a trial at Polish Ekstraklasa club Widzew Łódź, but did not get a contract offer there.In September of the same year Sidorenkov signed a three-month contract with Danish side Viborg, saying the club had potential to pursue promotion.