“Hopefully it’s nothing serious and just the result of an impact, and that we can keep him and get him back to full fitness,” Alfaro said.
“He suffered a double injury: first to his side and then to his lower back, which affected his quadriceps.
“He got scared and he had to come off.”
Enciso has been a regular starter throughout Paraguay’s qualification campaign, scoring three goals and assisting two.
He contributed 12 goals during his first season at Strasbourg after joining the club from Brighton in September.