Marcos Llorente will take the No14 shirt at Atletico Madrid.
The former Real Madrid midfielder inherits Rodrigo's number in a sure sign the latter is leaving Atletico.
Rodrigo is expected to sign with Manchester City, which are prepared to meet his €70m buyout clause.
He was also interesting Bayern Munich, but favours City where he is seen as an eventual replacement for Fernandinho.
Before Rodrigo, Gabi had worn the No14 since 2011 before he left for Qatar last year.