The key signings Arsenal must make after landing Kieran Tierney from Celtic this summer

Arsenal are hoping to land Kieran Tierney from Celtic in a bid to boost the Gunners backline – but what happens next?

The talented 22-year-old Celtic left-back is seen as a key target for Emery as he aims to solve his problems down the left flank.

With Nacho Monreal reaching veteran stage at the age of 33 and Sead Kolasinac failing to convince in the role at times last term, Emirates boss Unai Emery needs to continue strengthening his squad – which is still some way from being where he would like it to be at this stage of the summer.

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