I agree, this was a great, immersive article. I have also had several knee operations and, unfortunately, a ACL/meniscus injury did end my competitive career (it was at uni level, never likely to go beyond semi-professional even without the injury, mind) so I can relate on some level to his experience. Still, I was lucky enough to have to devoted quite a lot to my studies (partly because I knew I was never going to be a good enough footballer to really make a decent living from it) so was able to go on another path.
What is often ignored is that there are swathes of young lads (and, increasingly, young girls) in nearly every country on earth who devote the formative years of their lives almost entirely to football and then, due to the lacklustre academics of the programs or academies they were in, are unable to find a good career later when their glorious footballing dreams end, either due to severe injury or lack of the required level of talent/ability. It is a sad and more common outcome than those of Gundogan, Stones, Kompany, and Jesus (his country being an especially prime example of it).
I count myself lucky to have had the path and support I did. I have mates that were not so fortunate. It has driven me to volunteer with Football Youth Mentorship programs to help mitigate those outcomes whenever possible. It is important that footballers know there are other avenues to success and fulfilment.
All of that said, it is great to have Ilkay back and to have such a level-headed, mature influence on the team. Our younger players would do well to adopt his drive and grit.