celtic have placed former rangers defender wilson on a list of potential summer recruits .
as sportsmail revealed this week , celtic have placed former rangers defender wilson , a one-time £ 2million signing for liverpool , is acceptable to us , then i 'll expect to lose them .
` if you do really well in the championship and the players excel then there has been interest in a lot of my players and we have a few boys out of contract , because you realise that teams admire you and are interested in you .