The centre-back has insisted that he has no intention of departing Catalunya and is keen to make a name for himself at the reigning Liga champions
The 22-year-old's current deal is due to expire at the end of the 2013-14 campaign and a number of clubs are keeping a close eye on his situation at the Blaugrana.
However, Bartra has now made it clear that his future lies in Catalunya.
"I'm relaxed about my renewal - it's going fine. I'm certain that everything will work out okay. It's something between the club and my agent and I just have to focus on my job," Bartra said at a press conference.
"I've never considered leaving - I've been 12 years here and Barca has given me everything. I hope to be a Barca defender for many more years."
The centre-half has developed into an important first-team member this season and he's keen to convince coach Gerardo Martino of his qualities.
"I didn't get many minutes at the start of the season, but I've been getting more. I'm confident and I think the team is too," he explained.
"I feel I have an important role in the team and I'm trying to give the boss something to think about when he has to choose the team."
Bartra has made 11 appearances in all competitions so far this season.