Vince, who missed the last three NAB Challenge games with a sore glute, has been given permission to play for Woodville-West Torrens in a trial game against West Adelaide at Richmond on Saturday afternoon.
Nathan van Berlo, returning from a back injury, also can play for South Adelaide in its Friday night trial against Norwood at The Parade. He had his first hit-out of the 2010 pre-season with the Panthers last Saturday.
Other primary list Crows who have permission to play this weekend include Jack Gunston (Central District), Daniel Talia (Panthers), James Craig and Phil Davis (North), and Jarrhan Jacky (the Eagles) .
