I would take him long before Morelos. Morelos, yes is one of those players who does well , but can have mood swings and serious form issues.
If Morelos was the striker Rangers fans (who incidentally, the majority wanted rid of last season after his sending off for kicking Scott Brown (now there's a name that sums up Scottish football !!)) he would be gome already.
As I said in a previous conversation with someone, has any player came down from the Scottish league and gone directly to a top 6 team and been successful? Robertson went via Hull, McGinn came up through the Championship. The leap from Rangers or Celtic to the very top is too big. Remember Alan Hutton who was being talked about in the same breath as Cafu round Ibrox? How did he do?
If Morelos goes to Bournemouth or the like and makes it, by all means. But at present, going from a team creating 5 or 6 times the chances we do, playing against very much journeymen footballers to the top of the EPL, nope, there's no one in Scotland to do that.