odds of university letting my son retake his second year

If I were in your son’s situation I would go into the meeting with a plan, “this is how I am going to manage my time if I get given the opportunity to resit the year. This is what I learned from the failures” the more detailed a plan the better, proof of doing learning in his free time over the summer months and an extensive plan for the repeat year will give him a better chance at getting offered a repeat year. The reason E.C’s work is because the student had something unusual impact their ability to complete the work to the expected standard, your son does not have this so it needs to be framed as “I know exactly where I went wrong and I have a solid plan to prevent another failed year”. If he comes to them with empty promises they will feel it will be a wasted year for him. If he goes in showing that he knows exactly what he needs to do to pass a repeat year they may just give him a chance. He needs to be humble and acknowledge his failings and show he knows how they happened and has taken the initiative to make a plan based off this learning/self reflection. Best of luck to your son! I hope they take a chance on him. Alternatively, has he considered a change of course, maybe the one he is doing is just not right for him? It can be very hard to pass a uni course that does not interest you enough. If the course content is boring for him he will really struggle to study it.

My son has failed 3 of his resits in his second year of university. I can't find any data online as to how easy it is to convince a university to let you retake a year. He has a phone call on Monday with the university and is hoping to convince them to allow him to retake the year. There are no mitigating circumstances so my son is just going to try and convince them that he'll do better with his time management. The exams he did pass were all above 60%. Any advice on what the university would need to hear? Any idea on what his chances are?

which uni is he in? it's highly variable

My son has failed 3 of his resits in his second year of university. I can't find any data online as to how easy it is to convince a university to let you retake a year. He has a phone call on Monday with the university and is hoping to convince them to allow him to retake the year. There are no mitigating circumstances so my son is just going to try and convince them that he'll do better with his time management. The exams he did pass were all above 60%. Any advice on what the university would need to hear? Any idea on what his chances are?

It's more unlikely than likely at Manchester without significant mitigation. What's the course?
Fee income does not trump academic integrity, especially at a gaff like Manc.

Yeah but it’s second year so probably more likely since there isn’t a direct replacement candidate like there would be in first year