The 23-year-old Dutchman has been honest and open about his attitude towards a move away from Parkhead.
Indeed, the Dutch defender says the interest came especially from the Premier League, leaving him 'disappointed' when the Bhoys repeatedly rejected bids for him.
Van Dijk has urged the club to offload him this summer, suggesting the lack of competition in the Scottish Premiership has pushed him to a point where he feels he must leave Celtic ahead of next season.
And he admits he was left frustrated by the Scottish champions when they refused to sell him in the past.
The 23-year-old told Dutch football magazine Voetbal: "There has been interest every summer and winter, especially from the Premier League.
"I stood there open to it but Celtic decided not to sell me at that time. Yes, I was disappointed."
The Hoops' successful centre-back partnership of last season, then, could find itself completely dismantled ahead of next term.
Jason Denayer, who played alongside Van Dijk, has returned to parent club Manchester City after his loan spell at Celtic finished.
Dedryck Boyata has gone the other way, joining Ronny Deila's side on a free transfer. But, should Van Dijk also leave Parkhead, Celtic will need another marquee signing at centre-back this summer.