You just have to look at his recent history for us though to understand people's frustration:
https://www.transfermarkt.co.uk/yerry-mina/leistungsdaten/spieler/289446/plus/0?saison=2021
This season, managed 70 mins in the first game, out for 8 weeks.
Last season managed 1 full game, had to miss the next. Managed 4 games after that, then injured and missed 7. Came back, played 31 mins, got injured and missed 3. Came back, played 2, then on the third managed 35 mins before getting injured again and missing 9. 1 game, missed the next, 1 game, then 18 mins of the next injured to miss the final 4.
Unreliable and frankly, I'm starting to get the impression half of his injuries are just him not fancying it. Just on Saturday we saw Coady down injured for a while but trooper on till subbed off for another forward. Absolutely no chance in Hell does Mina try carry on after a knock.
Huge wages, unreliable, unsellable, everyone is just pretty sick of him now regardless of how much he loves a boogie when we score.