The Colombian is sure his international compatriot will come good.
They face Peru and Uruguay in their first qualification matches for the World Cup in Qatar in 2018.
Ahead of the big fixtures Sanchez, who is a regular starter in the heart of midfield for the Colombian side, has been talking about some of the star players he will be playing with in the fixture.
Colombia have steadily rose up the World Rankings in recent years and with top talent like James Rodriguez and Radamel Falcao in their sides you can see why.
However one will not play on Thursday against Peru and another may not start.
Real Madrid star James has pulled out of the ties injured whilst Falcao may be used from the bench after struggling to have an impact at Chelsea this season.
"James is is a great player for the team but the idea is that the absence of James is not overly important. Falcao, he seems to be in really good shape and is wanting to score goals, that's what he can do. "
Falcao is one goal away from becoming Colombia's all time goalscorer so he will certainly hope that Sanchez and co can give him the base to thrive. But considering he has scored just five goals in two seasons at club level and has so far netted just once for Chelsea.
Here's hoping he comes good in South America this month.