Strikers are hard to come by - and there aren't any worth talking about in the Championship
The top two strikers in Holland this year are Luuk DeJong who didn't score while at Newcastle - and Dusan Tadic who scored 20 goals in four seasons at Southamption. The third highest is Hirving Lozano...
Long would score 8-10 goals as a second striker - and would have the pace for counter-attacks to set up others.
The team needs pace - and it is short of it at the moment. You would still need a another striker - but the issue of pace up front would be taken care of.