
The 21-year-old joined the Blues from MFK Košice in 2007 and signed professional terms in 2010.
He has also spent time on loan with Doncaster Rovers, ADO Den Haag and Vitória de Guimarães.
Milan joined the Saddlers in July 2013 and made an instant impact by scoring in the 3-1 win over Tranmere Rovers on the opening day of the season.
He has gone on to make twenty-nine appearances, and scored four goals in all competitions.