"It's only been a few months, it's too soon to know the full extent, but in the viewing levels in the UK Bellingham is having a big impact in our league," he told the PA news agency.
"He's an important player and the United Kingdom and other English-speaking areas are attracted to our league because of him. Bellingham is a top player, we knew he was a great player but we didn't realise the level he could reach, at Real Madrid it's like he's from a different planet."
He added: "We have got the best player in Europe who is English. We can't compare the two countries. Obviously the Premier League is bigger but the best player in Europe is playing in Spain. So we have the choice to get the best players to come to Spain."