Arsenal had a busy end to the summer transfer window. Here are all the stories from deadline day at The Emirates.
Kieran Tierney signs
Arsenal have completed the signing of Kieran Tierney from Celtic. The 22-year-old has joined for £25m (BBC Sport) and signed a long-term deal.
The Gunners have been looking for a new left-back all summer and Tierney has been the top choice. The Scotland international will compete with Sead Kolasinac in this position.
David Luiz deal agreed

Arsenal have agreed a deal to sign David Luiz from Chelsea but this has not been confirmed yet. Arsenal are expected to unveil David Luiz as a new signing for £8m on a two-year contract (BBC Sport).
The Brazilian international, 32, has played over 150 games for Chelsea and is an experienced player. Luiz adds some much needed experience to Arsenal’s centre-back ranks and can also play in midfield.
Alex Iwobi leaving

In a sensational last-ditch move, Everton have agreed a £40m fee with Arsenal for Alex Iwobi (BBC Sport). If this deal goes ahead, the 23-year-old Nigerian winger will join Everton on a permanent deal.
He has dropped down the pecking order after the arrival of Nicolas Pepe. Unai Emery is prepared to let him go at the right price and Everton seem to have met the valuation after missing out on Wilfried Zaha.
Dominic Thompson departs
One left-back arrived in North London today but another departed. Dominic Thompson, a teenage academy left-back, has joined Brentford for an undisclosed fee. He never made a senior appearance.
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