 Complete the following phrase:  His first UEFA appointment was a third round match between Varteks and Lens in the 2005 UEFA Intertoto Cup. The following year, he took charge of his first UEFA Cup match in the tournament proper following two qualifying matches, a first round match between Red Star Belgrade and Slovan Liberec. His first Champions League group stage appointment was a match between Celtic and Villarreal on 10 December 2008. His most prestigious appointment was as fourth official in the 