Terry worked closely with Villas-Boas during their time together at Chelsea and, although the Portuguese believes the former England captain will be missed, he knows there are a number of able deputies waiting to grab their opportunity.
"Obviously you have to make sure to take into account that this is an extremely good player, an experienced player and Chelsea's captain," he said. "A player of this dimension always is surely missed.
"In the end, I've worked with those players in the past. And the reality was that in that precise sector we never had problems. Other centre-backs are tremendously good too.
"Gary Cahill had a solid start to his Chelsea season when we brought him in January, this season also. And David Luiz, Ivanovic - another option. So the amount of options is so good."