He remained at the Catalonian club working with Robson 's successor , Louis van Gaal .
In the early 1990s , he became an interpreter for Sir Bobby Robson at Sporting CP and Porto in Portugal , and Barcelona in Spain .
He remained at the Catalonian club working with Sir 's successor , Louis van Gaal .
In the early 1990s , he became an interpreter for Sir Bobby Robson at Sporting CP and Porto in Portugal , and Barcelona in Spain .