The Gunners do have the likes of Sead Kolasinac and Nacho Monreal who play at left-back but neither of them have done anything to impress Unai Emery last season.
And on the other hand, Kieran Tierney had a wonderful season with Celtic and the youngster is being dubbed as the next best left-back in European football.
A number of top European clubs have shown interest in signing him during the summer transfer window but experts believe that it will be Arsenal who will land the left-back.
Celtic know the importance of Kieran Tierney and Neil Lennon’s side are milking the situation – and rightly so.
Reports suggest that the Bhoys are demanding somewhere around 25 million pounds in order to release the left-back and this is where Arsenal are having troubles.
The Gunners have a very limited transfer budget this summer and spending a large chunk of that on Kieran Tierney is something that Emery does not want to do.
And this is why the North London club have decided to make cash plus a player offer to Celtic in return of their youngster.
As per the latest rumours, the Gunners have made a list of four players, and one of them could be sent out on loan to Celtic as part of the Kieran Tierney deal.
The four players are that Arsenal are offering are Carl Jenkinson, Jordi Osei-Tutu, Emile Smith Rowe or Eddie Nketiah.
It is still unsure whether Celtic will agree to the new offer tabled by Arsenal since they need money to strengthen their squad for the upcoming season.
And the Bhoys fans will be really furious if Neil Lennon cannot use the money from the sale of Kieran Tierney in order to bring in some big names.