Arsenal complete their fifth signing of the transfer window

Arsenal have completed their fifth signing of the summer transfer window with defender Kieran Tierney joining them from Celtic on a long-term deal.

The Scotland international was strongly tipped to join the Gunners since the start of the summer and a deal has been eventually announced on deadline day with the Hoops agreeing on a Scottish record fee of £25m.

"I'm delighted to be here. Obviously I'm injured now, but I'm just looking forward to getting back on the pitch, training and getting involved with the squad," he told the club's official website.

The left-sided defender is currently recovering following a double hernia operation but he is expected to return to action in the next few weeks after returning to individual training.

Aside from Tierney, the Gunners have wrapped up the signature of David Luiz from Premier League rivals but they are yet to make an announcement as they finalise the interview and photoshoot with the Brazil international.