5 summer signings that haven't solved the problem issue at their clubs

#3 Stephan Lichtsteiner (Arsenal)

Brighton & Hove Albion v Arsenal FC - Premier League

Lichtsteiner was seen by many as a very shrewd signing by Unai Emery for Arsenal. The right-back had plenty of top-flight experience and was available for free.

Hector Bellerin is an excellent attacking outlet for the Gunners down the right flank, but the defensive part of his game still needs improvement, and Lichtsteiner could also act as a mentor for the 23-year-old.

Part of the reason why the Swiss defender has failed to impress so far is because Emery has often rotated his defensive structure from a 4 man defence to 3 at the back.

As a result, Lichtsteiner has had to play as a right back, right wing-back and centre back so far, thanks to Arsenal's injury crisis.

Bellerin is still the first choice for Emery, but even in his absence - the Spaniard suffered a ligament tear against Chelsea recently - Emery seems to prefer the vastly inexperienced Ainsley Maitland-Niles over the 35-year-old.

He is approaching the end of a truly illustrious career though, and he's understandably not the player he once was during his peak at Juventus. His versatility means he still has a lot to offer to Arsenal; it just might not be in ways that he would have expected.