Dembele’s value was based on his youth pedigree, his ongoing success in Scotland, the fact that he had played in England with some competence and the fact that he had scored some Champion’s League goals, particularly as some had been against the famous Man City (reserves). No one in their right mind gave a monkey’s about him scoring against Kiernan and Senderos. Dembele is a good player with a good pedigree. Old Firm games have nothing to do with it.
Morelos’ value is now based on Dembele being a yardstick for the SPL. Morelos is better than Dembele in Scotland on every metric. He is more rarely injured. He is a harder worker. He scores more and creates more. He is better at leading the line single handed. Like Dembele, he has been successful at several clubs. He does not have the CL shine but he has made team of the week on a few occasions in Europa League which equals scoring in meaningless CL games.
If Dembele’s transfer hadn’t happened then I don’t know what we would have aimed at. But, as it did happen, we know the market price for a slightly inferior player on equivalent stats. Expecting a comparable price is fully to be expected.