The Colombian says he's not in favor of having multiple riders vying for the same win within Movistar, which was the case in the 2018 Tour.
The Spanish duo struggled this season at the French grand tour, but they'll return next year for another run.
The Spanish team fell short of its goals to place at least one rider on the podium, although it won two stages and the team prize.
Once a climbing superstar expected to win the Tour de France, Nairo Quintana comes up short again, this time at the Vuelta.
Alejandro Valverde and Nairo Quintana were second and third in the Vuelta entering Tuesday's time trial.