I think Berwick announced the signing of Harris last October, I would be amazed if Harris was planning to be at a grass track meeting in Denmark at that time.
Not knocking the rider but the Chris Harris guesting situation is probably a prime example among many prime examples as to why speedway isn't taking very seriously anymore.
I hope nobody is missing the irony of the fact that Berwick are being refused to have a guest for Chris Harris when Chris Harris has guested for virtually every team up and down the Country.
New Berwick rider takes part in the Danish Final tonight at Holsted, updates here
https://sportowefakty.wp.pl/zuzel/relacja/133475/final-im-danii-w-holsted
On his day Cook is at least as good round Berwick so should be a good enough guest. Problem is his scores of late aren't as good and his attitude and performance in the Glasgow visit to Berwick wasn't great to say the least, so this guest booking is a gamble.