Brighton's interest was first reported by The Athletic earlier this month. Yun and winger Yang Min-heyok are seen as two of the brightest young talents in their homeland. Yun’s fellow winger joined Tottenham from Gangwon at the start of the January transfer window, and he has been loaned to Championship side Queens Park Rangers.

Aston Villa have joined the race to sign Marcus Rashford on loan from Manchester United before the transfer window closes on Monday. A move to Villa Park is thought to be a long shot but the Midlands club are looking at the England international as they search for a replacement for Jhon Duran,

Listen to Sportsound and follow live text updates of Celtic's final league phase fixture in the Champions League against Aston Villa.