Sevilla have joined the interest in Burnley goalkeeper Arijanet Muric.
Muric has lost his first-choice status this season to fellow former Manchester City keeper James Trafford.
A move in January has been mooted and Sky Deutschland says Union Berlin are keen.
However, fellow Champions League participant Sevilla are also interested in Muric.
Muric's deal at Turf Moor runs to 2026.