Arsenal have completed the signing of Brazil defender David Luiz from Chelsea in an £8m deal.

Luiz, 32, joins the Gunners on a two-year contract, with the deal following Arsenal’s £25m deadline day purchase of Celtic left-back Kieran Tierney, 22.

Arsenal manager Unai Emery said Luiz brings “huge experience” and “adds to our defensive strength”.

Luiz takes Emery’s summer spending over £130m after deals for Nicolas Pepe, William Saliba and Gabriel Martinelli.