But there is at least one Superclasico newcomer who will be raring to go. Braian Romero is the man of the moment at River thanks to his goalscoring prowess, having taken the long way round to reach the pinnacle of Argentine football.
Romero, 30, was one of the few eye-catching transfers in a quiet winter window in Argentina, with most teams still reeling from the financial catastrophe of the coronavirus pandemic.
River parted with just over $2 million (£1m) to land the striker from Defensa y Justicia as a replacement for Colombia international Rafael Borre, who moved on to Eintracht Frankfurt. It did not take long for him to make his mark.