Jonny Howson, Neill Collins and Luciano Becchio were the only starters who had appeared in the game which confirmed United's promotion two months ago.
Robert Snodgrass hit the woodwork with nine minutes remaining and South African striker Davide Somma later had a goal disallowed in a dubious offside decision.
Midfielder Tomas Brusco, from MFK Dubnika, and u21 international central defender Marian Jarabica, from Ceske Budejivice, both received 45 minutes to impress.
United's 1st half line-up: Schmeichel (Martin 33); Crowe, Jarabica, Collins, Bessone; Sam, Howson, Brusco, White; Grella, Becchio.
United's 2nd half line-up: Martin (Higgs 60); Connolly, Bromby, Lees, Hughes; Gradel, Kilkenny, Johnson, Snodgrass; Somma, Paynter.
Source: PA
Source: PA