In 1987, Brunswick began a downhill slide and was relegated from the NSL by 1988. Mehmet was loaned out to Footscray Jugoslav United Soccer Team Footscray JUST in 1988 and stayed just one year. He made 25 appearances and one goal before moving to South Melbourne, where he made 138 appearances and scored five goals from 1989 to 1995. He was part of South Melbourne's 1991 NSL Championship winning team. He blocked a certain Melbourne Croatia goal right on the goal-line in the second half of the grand-final.