This is a 'concern' for Steve Bruce at Newcastle United

Arsenal ran out 4-0 winners after scoring four second-half goals.

Newcastle had had the better of the first half, but they became “ragged” as they chased the game.

Head coach Bruce said: “I’ve said many times that we’re not really capable of changing, and you probably saw that towards the end. We changed things to try to get back into it, but we did become ragged.

“When we open up, we lose it at the other end, and become too open. I have to say Martin (Dubravka) has been fantastic all season, but it’s a poor mistake. Then when you see Lacazette hit one and the ball come off his other foot and go in the top corner, you know it’s not your day. The way we were so open at the end is a concern.”