when he first arrived at arsenal, i was really impressed with his gks. he had some super showings, for nt and club. funny enough arsenal went years without a good enough gk and they finally picked up a decent one, and then got cech right away as well. the last 2 years i think he's just been gradually regressing, with not enough playing time. with colombia i see some super saves still, oblak like, and so i'm not sure if it's gks that is his weakness, rather maybe ospina should have his defence lowered, and maybe mentality/form as well?
i'm not too sure now as i've also seen the mistakes ospina has made so i understand how you could see his gks as less worthy, i do think at some point he deserved orange gks though.
If you don't put effort into your post, i won't put effort in my response.