Newcastle boss Eddie Howe expects Chelsea to be stronger next season.
Newcastle meet Chelsea on Sunday.
Howe said, "Next season, I think they'll be a big threat. They've got top quality players - I think that's undoubted - but I think trying to form a team very quickly with a lot of new players is very difficult to do.
"I think that's probably been their biggest challenge.
"But I think next year a lot of those players will now have had Premier League experience, they will have adjusted to the league, and they'll be a big threat."