Arsenal boss Unai Emery is delighted with Kieran Tierney after his return from injury.

The summer signing from Celtic backed up his impressive debut last week with another quality display in Thursday's comfortable win over Standard Liege.

Asked about Tierney's performance, Emery said: "Kieran after his injury is coming back with a good attitude.

"He played last week against Nottingham Forest for 80 minutes with a good performance, and tonight was another very good performance.

"We are a better competitive team with him and with Sead Kolasinac at left back. We are happy with him."