The Celtic boss has been speaking ahead of the club's first Champions League qualifying match.
The Dutch centre-back has played 105 times for the Bhoys and was integral in their double success last season, but the Scottish Sun has claimed Premier League club Norwich City are preparing an £8million bid for the 23-year-old.
So what does Deila think of the speculation?
In a press conference conducted on Wednesday, the Celtic boss said, “We have a lot of central defenders and if we can keep what we have we don’t see any reasons to get another in.
“Virgil is very important for us and now his task is helping us into the Champions League and I’m sure he will be motivated for that.”
Van Dijk has a contract at Celtic Park until the summer of 2017 and unless the club tie him down to a new long-term deal his value will decrease significantly in 12 months.
That said his ongoing presence at the club is far more important than any potential addition to the transfer kitty, especially with Jason Denayer’s loan spell now at an end.
While Dedryck Boyata has been signed from Manchester City, Celtic will not want to lose both of last season’s first-choice centre backs.
At the same time, Deila will know the importance Celtic’s successful navigation of the Champions League qualifying stages could have on any potential decision from van Dijk himself in the coming months.
RD: "We have a lot of central defenders, and if we can keep what we have, we don’t see any reasons to get another in." (MH)— Celtic Football Club (@celticfc) June 24, 2015