Arsenal boss Unai Emery says their deal for David Luiz is all positive.

Emery was keen to add a centre-back after losing captain Laurent Koscielny to French club Bordeaux - despite the Arsenal head coach's best attempts at keeping him.

He got his wish on Deadline Day, signing Luiz from Chelsea in an £8m deal.

"Last year he (Luiz) won the Europa League and he played every match in the Premier League," he said.

"It is very difficult to find something negative from him. There is a lot more positive things to help us."