Paris Saint-Germain forward Neymar has been named in Brazil's squad for September friendlies against Colombia and Peru.
Ivan Rakitic scored the winner as LaLiga champion Barcelona overcame Napoli 2-1 in the first of two friendlies in the United States.
Pierre-Emerick Aubameyang put Arsenal ahead but an Ainsley Maitland-Niles own goal helped Barcelona bounce back in the Joan Gamper Trophy.
Juan Mata's stoppage-time penalty gave a profligate Manchester United a controversial 1-0 friendly win over Norwegian outfit Kristiansund in Oslo.
Lorenzo Insigne gave Liverpool's defenders a torrid afternoon as Napoli beat the European champion 3-0 in a friendly at Murrayfield.
Romelu Lukaku marked his first appearance in an Inter shirt by scoring four times in his new side's emphatic win against Virtus Bergamo.