Not really, when somewhat in form he is an integral part of the Juventus 3-5-2, as his play with the back to the goal is fantastic, as showcased from octobre to january or so.
Wingbacks who can actually cross, such as an Udinese-Isla would of course dramatically increase his goal tally, but I don't really see any attainable player capable of doing that while simultaniuosly providing the same defensive cover Asamoah and Lichtsteiner do.
He was playing great a few months ago, and now he undergoes somewhat of a slump, but it is far to early to write him off, especially considering his predicament last season.