Muniain was scheduled to undergo his medical examination today.
Former Athletic Bilbao captain Iker Muniain is a step away from signing for San Lorenzo in Argentina.AdvertisementAdvertisementSpeaking to local reporters: "Everything is going very well."
"Let's see if we can close this story. I'm very happy to be back here. I can't wait."
Muniain, 31, came off contract at Athletic this summer and was eager to continue his career in Argentina this season.