Newcastle United remain lax defensively. Indeed, the problems are such that Eddie Howe again confirmed he was worried about the ease with which his backline is constantly breached following Saturday’s defeat to Arsenal. Newcastle, after all, had the joint-best defence in the Premier League last season. Now, however, only Bournemouth, Nottingham Forest and the bottom three have conceded more often than Howe’s side (45). Saturday’s loss to Arsenal was a particularly difficult evening for one Sven Botman. It was he who scored the own goal that set the Gunners on their way. While there is usually …