The pair have started combining together on the pitch in the past week and Neymar has been encouraged.
"Little by little we read and we understand each other better," he confessed.
"We've started well, with a win against Valencia, but it's important we continue to improve.
"I am getting better physically and in all aspects. I am improving with every game."
Asked if the Spanish Liga is tougher than what he's experience in Brazil, Neymar smiled: "I suffer the same in Spain as in Brazil."
For the big stories and the banter follow us on Twitter: @tribalfootball