Howay man, they're a massive club in their own right. How many players have excelled there and got big transfers? Not like they are some Euopean football's backwater.
I'm just saying we should be able to compete with Porto. They're a big club yes, but they're not Real Madrid or Bayern Munich. He's 20, he'll be looking for a stepping stone and the PL is a much better shop window than the Portuguese league. He'll probably play more here too.