Former Chelsea star Frank Lampard has warned that the Premier League champions will face “a big test” to continue their dominance next season.

The Blues claimed a second title in three seasons on Friday after their 1-0 win away to West Brom ensured that they cannot be caught by second-place Tottenham in their final three matches.

“It will be a big test next year,” he told Sky Sports. “It’s the second season, and the formation won’t be a surprise. The players will be a second season in and we saw that last season they couldn’t sustain it for a second year.

“And all the other teams behind, other than Tottenham, have been disappointing, and they will be back stronger.”