Arsenal could miss out on the signing of Kieran Tierney from Celtic.
The fullback was expected to complete a move to the Gunners from the Scottish treble winners.
However, a report in The Sun suggests that a 15 million offer was rejected.
Celtic want close to twice as much, with Arsenal operating on a very limited transfer budget this summer.
The source also claims that Napoli could steal a march on the Gunners, as they are on the lookout for a left back this summer as well.
Tierney would be open to a move to Italy, as Napoli are in the Champions League.
