SPURS boss Andre Villas-Boas admits he has made big changes to his management style because of the mistakes he made at Chelsea.

Villas-Boas returns to Stamford Bridge tomorrow for the first time since he was sacked by Blues owner Roman Abramovich last season.

His plans to start phasing out the likes of Didier Drogba, Frank Lampard and John Terry while replacing them with younger, more dynamic players, played a part in his downfall at Chelsea.

But Villas-Boas said: "The experiences (of managing Chelsea and Spurs) are different and I learned a great lesson from last year.

"There are things I do dramatically different and things that I do exactly the same because you still have to stay true to your principles.

"The Chelsea experience allowed me to see things in a different way and helped me address the mistakes I made – that always allows you to develop on a personal and a professional level."

Back in March Tottenham held a seven-point gap over Arsenal, but a poor run of form in the final stretch means they may have to win their final three games –against Chelsea, Stoke and Sunderland – to qualify for the Champions League.

"There are always things to refine," said Villas-Boas.

"Like every other team we have had great games and bad games, and games where we should have expressed ourselves better."