Celtic boss Neil Lennon has told Arsenal to get serious if they want Kieran Tierney.
Arsenal were said to be closing in on the deal after working on a restructured package for the 25million signing, but Lennon says there is still work to be done.
"Obviously the window in England shuts on Thursday. It can be an unsettling period for any player," Lennon told Sky Sports.
"We have rejected two bids and the clubs know the valuation that we value Kieran [Tierney] at and it's not been met.
"He is dealing with it very well. We are living in an age now where it's coming at you from all angles, especially on social media.
"He is only 22. We have to be mindful of that as well. He is trying to keep his feet on the ground and stay focused on the present."
