Richarlison shone on his full debut in Saturday's win over Fulham and is already pushing for a place in a front three which has comfortably been the best in the Premier League since Dejan Kulusevski joined Harry Kane and Heung-min Son from February.
"We are so convinced [it was right] to buy him so far," Paratici said. "This kind of style of football is, I think, perfect for us. Not just technically speaking but [in terms of] character.
“He's a fighter, he has a big energy, he can play three positions in the forwards. He has great experience in the Premier League and national team for Brazil. I think it's really technically speaking an easy choice [to sign him]."
Spurs completed all six of their summer signings for the current squad by July 19, in time for the majority of pre-season under head coach Antonio Conte, and Paratici believes their business sent a message to both supporters and rival clubs.
"To do things early is just a question of having a vision," he said in an interview with Spurs club media. "The same vision as the club and coach, everyone together making the right decisions to straightaway find our targets.
"Not just for Antonio for every coach it's important to have this kind of solution. To get players early you can work, manage them, know them better.
“It's easy from a sporting, economic perspective and gives the right signal to fans, everyone, other clubs. We know what we have to do and we follow a line. That's it."
Spurs return to the Champions League on Wednesday for the first time since March 2020 and Paratici says they must make a habit of playing in the competition, despite the fierce competition in the Premier League.
"First of all, when you are in Champions League you get a bit for the club which is very important [in terms of] brand and money," he said ahead of the visit of Marseille.
"[It is also] attractive for players because every player in the world wants to play Champions League.
“In England it's very difficult to get in the top four in the Premier League. For the other clubs in England it's something special to get in the top four and for us it has to be a continued target. I don't want to say a 'normal' target but it has to become a habit to play Champions League.
"The team is much more balanced and then the work that Antonio did in this year was amazing," Paratici added.
"I was to thank the staff for this kind of work, every day focussed. We're much better. We don't have to forget this. I hope in one year’s time we're here and I say we're much better again.
"One year ago I came here and if you remember my first words were we have to be better, build something important and arrive to be competitive.
“I think we're in a good place, the gap has reduced. We finished in the table 20 points less than Liverpool and Manchester City so it is not possible to reduce this kind of gap in a small time but we're much better."