Brazil's star striker posted a photo with Coutinho on Instagram with the message "Happy Birthday" in Russian. The midfielder turned 26 on Tuesday.
Members of team Brazil, led by Neymar, also performed a traditional flour and eggs birthday prank on the midfielder.
The Brazil national football team arrived in the southern Russian city of Sochi on Monday, ahead of the upcoming FIFA World Cup, and held an open training session earlier on Tuesday.
Neymar & Brazil prank Coutinho on his birthday! 😂😂😂— Goal UK (@GoalUK) 12 июня 2018 г.
Credit: Ruptly pic.twitter.com/LzGiZUq3cD
The World Cup will be held in Russia from June 14 to July 15. Brazil has won the World Cup five times and will play Switzerland, Costa Rica and Serbia in Group E in this summer's tournament.