Yes. It's a grade 1 to grade 2 or mild to moderate sprain.
The time frame is grade 1, 1 to 4 weeks
Grade 2, 4-6 weeks Grade 3 6-8 weeks.
So it's a reasonable time frame and he will fully recover. These are time to return to play with usually around 80 -90% of the physiologic healing. Ligaments don't fully heal for 9-12 Months. But again that's complete healing not healed enough to return to full activities.