Arsenal are expected to make a new offer for Celtic left-back Kieran Tierney over the coming days, according to Sky sources.
The Gunners' initial £15m bid for Tierney was rejected in June.
Neil Lennon says Celtic will not be flexible regarding their valuation of the Scotland international, as Arsenal's interest continues.
Meanwhile, Sky Sports News understands the north London club are increasingly confident an agreement can be reached for Tierney before the transfer deadline closes on August 8.
The 22-year-old, who has won five Scottish Premiership titles, made 40 appearances in all competitions for the Hoops during the 2018/19 campaign.
If Arsenal are able to secure the services of Tierney he would be Unai Emery's fifth signing of the summer window.
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It's Transfer Deadline Day for the Premier League and Championship on Thursday, August 8 and Sky Sports will be bringing you all the latest news on who your club is signing.
Start your day with Deadline Day Breakfast (6am) ahead of a special Good Morning Transfers show (9am), with Deadline Day - The Countdown (4pm) taking you to the 5pm deadline. The Transfer Show - Deadline Day at 6pm will analyse the big moves before Deadline Day at Ten rounds up all the transfer headlines.
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