Harry Redknapp has admitted Sandro was taught an important lesson about the pace of the Premier League in Tottenham's 4-2 defeat to Bolton on Saturday.
The Brazilian midfielder only arrived at White Hart Lane in September after agreeing to join from homeland club Internacional earlier in the year.
He helped Inter to Copa Libertadores success and has already been capped by his country at the age of 21.
However, Sandro has so far struggled to establish himself as a regular starter for Spurs, with competition for places fierce in the key battleground of central midfield.
He was handed an opportunity at the Reebok Stadium but was partly at fault for the opening goal after carelessly losing possession to Fabrice Muamba, who started the move that resulted in Kevin Davies scoring.
Redknapp believes Sandro made such a mistake because he is still coming to terms with the English game, but has backed him to be a success.
"The ball came into him and he thought he had all the time in the world," said the Tottenham manager.
"In Brazil they drop off you, you look up and play, but the ball wasn't there any more. Muamba had sacked him.
"The ball is shifted to Davies and we are 1-0 down. But Sandro will be a good player."
Spurs have struggled to juggle their Premier League schedule with the demands of a maiden UEFA Champions League campaign this season.
But they will only be focused on domestic matters over the coming week with home games against Sunderland and Blackburn.
"They are two massive matches. We need to pick up good points from them," said Redknapp.