He's OK in terms of winning free kicks once he gets a head of steam and can cut across or get blind side of the defender. and then on the break he won't mislay every single pass, but he's at best a motivated Lingard style RFW but with his ceiling about 50% below Lingard's highest levels. He seems the sort receptive to basic tactical instructions about harrying and closing down lines, so if we can't sell him for 10m or similar, he offers an option for defending from the front and looking to release first-time tackle-passes to Martial or whoever ends up playing no.9 (I'd like to think Ronaldo makes a fairly graceful exit this window in so far as that's possible) for the last 15 minutes of games against higher defences.
On the other hand, Garnacho can also play right-sided forward, definitely has similar pace and surely can't be much less physically resilient, but is almost certainly technically better, so I'd like to see him trialed. Hopefully this is one of those situations where a good League Cup tie or two and the Europa League allows players like Garnacho/Iqbal to make their case as first reserves coming off the bench when we need both enthusiasm, fresh energy and a bit more guile.