LOL at the Echo being "indisputable evidence".
forbes.com/telegraph isn't?
google '"paul martin" "ross barkley"
then google '"rob jansen" "Ronald koeman"'
or '"wasserman" "koeman"'
or '"wasserman" "ross barkley"'.
Both Koeman and Barkley are represented by the same powerful company behind their agent's names.
There is more going on behind the scenes than a simple Koeman wants/doesn't want Barkley at Everton imo. Football deals involve finances and it is interesting at the very least.