It makes sense why Eze prefers Arsenal, which is a team that is ready to go further. Meanwhile even though Spurs have won the Europa League trophy, it does not mean that Eze is interested because Arsenal offers more opportunities for next season. However at Arsenal, he will have to work harder to become part of the main squad.
Adding to another possible reason of seeing Arsenal the way he saw them is because there is a competition, some players who wants to wass strong puts a club they have to prove there performance a lot as a reason why they choose them, Eze is someone with a record that needs vibrant stars to unravel things about himself. His presence on Arsenal will future attracts more consideration than some other players on his position, I think currently Martin Odegaard and Ethan Nwaneri are some of the good Arsenal midfielders but Eberechi is another good and positive figure of that midfield even if is not now but definitely later.