Think he'd be a good addition as a backup forward/wing option. Looking at his stats, he averages a goal every 250 mins in the Championship - less than 3 games per goal.
In a vacuum, assuming playing every minute of the league season, that would be 10-15 goals.
However, of his 142 Champ appearances, he's only completed 90 mins 30 times (subbed on 55 times, subbed off 57 = 112). So he doesn't seem reliable enough to be first choice (at least not on the surface).
If we get the Rak-Sakyi deal over the line, then I could see this being one to cover all across the forward line. He could do a solid job on either wing, in the 10 position behind Moore, or as the focal striker, trying to get in behind with his pace. Having someone versatile like that would really help take the strain.