"We spoke about it before," Villas-Boas told ESPN. "In the end, it was difficult for him, not because of the consecutive run - he was looking good. It was not on performance that we made the switch, that's for sure.
"We had the opportunity to give Hugo a consecutive run of four games - including the two national team games like it happened.
"We are extremely happy about the fact we did. It gave him the first impact of Premier League football. But, as a great professional, he has to move on from that."
Tottenham are currently fifth in the Premier League table with 14 points from seven matches, five points behind leaders Chelsea.