Philippe Coutinho spoke to former Liverpool teammate Roberto Firmino before joining Bayern Munich this summer.
The pair played together for two and a half years at Anfield and helped Brazil win the Copa America this summer.
Coutinho ensured he contacted Firmino to ask him about the strength of the Bundesliga.
"I talked with Roberto Firmino about the intensity of the Bundesliga and the tight matches there," Coutinho told Sport Bild . "He told me a lot about the different Bundesliga teams. Some of my Brazil team-mates asked me how things are going at Bayern. I told them how happy I am to be there."