The two parties have been negotiating for some time and now it's seems that they have come to an agreement.
The problem arose when there had been some talks about Umtiti's future.
There were rumors that he might move to Manchester United. They had an offer around 10 million euros per season.
Another rumor was related to Manchester City. In this case it was Umtiti who wanted to move to Guardiola's team. The main reason of this rumor was that Umtiti tried to put pressure on Barcelona.
Another team that Umtiti could move is PSG, however, they can't sign him because the club would face problems because of the financial fair play.
So everything just proves that Umtiti will continue at Barcelona but the club doesn't want to come to an agreement about his salary. He now earns two million euros and his salary could only reach up to five.