Ferrari driver Sebastian Vettel was one of the special guests at FC Barcelona training at the Ciudad Deportiva in Sant Joan Despí on Thursday.
Vettel, who on Sunday was involved in the Spanish Gran Prix in Barcelona, took advantage of being close by to drop in and watch the Barça stars at work.
It was Barcelona's first session of the week, with Luis Enrique having given them a few days off to rest ahead of Sunday's game against Eibar at Camp Nou.
German goalkeeper Marc-Andre ter Stegen uploaded an image of his compatriot's visit on Instagram:
As well as the Formula 1 driver, there was also a visit from former Barcelona player and ex-Sporting Gijon coach 'Pitu' Abelardo. He remains good friends with Luis Enrique.