Sorry mate but I think that's total rubbish. I'd hazard a guess that around 95%-99% of young 21 year old footballers, still on professional contracts around the UK, have never played at a level higher than the championship. As regards experience to date I would also guess Robinson is probably in the top 10, possibly even top 5%, and that less than 1% will have even 1 full International under their belt irrespective of who the country is. The club would be negligent to let him go for buttons and you'd be the first one moaning if he became successful.
2 years ago we paid £6m for a young 20yo Nigerian, who had only ever played for an unfashionable Belgian team, and won fewer full caps for a country ranked lower than the USA, and everybody thought it was good business.