The other two German participants - RB Leipzig and Borussia Monchengladbach - have harder tasks in Groups F and B respectively.
The 18-year-old opened the scoring in the 15th minute with a first-time finish with the inside of his foot after Jordi Alba's pullback from Clement Lenglet's pass.
"I am available. I would be lying if I said Schalke's future leaves me cold," he said.
The 41-year-old was also fined 100,000 Swiss francs (around 108,000 U.S. dollars), the world football governing body said in a statement on Monday.
Libertad are third, level on points with Caracas FC, but with an inferior goal difference.
Meanwhile, Guarani also booked a place in the next stage of the tournament with a 3-1 win at Tigre. Johan Romana, Jose Florentin and Cecilio Dominguez netted for the Paraguayan outfit while Pablo Magnin was on target for the Argentine side.
A special field operation support management team has also been set up to guarantee the training tasks of the national team. According to the follow-up plan, by the end of 2020, the National Sliding Center, the National Alpine Skiing Center and Yanqing Winter Olympic Village will all be completed.
Also on Tuesday, men's seventh seed Matteo Berrettini of Italy cruised to a 6-3, 6-1, 6-3 victory over Canadian Vasek Pospisi.
Playing in place of the injured striker Kim Shin-Wook, substitute Bi Jinhao seized the opportunity with a close-range shot in the 25th minute and added a second goal on 41 minutes to ensure Shenhua on course grasping the last spot to race for championship.
Beer Sheva scored the only goal after just four minutes of play with a penalty from Portuguese midfielder Josue, after Plzen's goalkeeper Ales Hruska fouled Colombian striker Jhonatan Agudelo.
Roberto Lopez sealed the win in the 94th minute with a powerful shot into the corner after another assist from the impressive Merino.