Fun fact: On average, players moving from La Liga to the Premier League see a 5% drop in output, vs a 17% drop when moving from the Championship to the Prem (which also happens to be the same average drop in output for players moving from the Bundesliga to the Prem, funnily enough).
The odds are in our favor here.
And just so you guys know I'm not pulling your leg, I'll point out that MLS is really bad in this regard; players moving from MLS to the Premier League average a 36% drop in production.