This one comes up time and time again, doesn't it?
I'm in the (almost) opposite camp - people who insist on pronouncing foreign names in a British way. Admittedly, there's no need for an exaggerated attempt at an accent, but correct pronunciation of the vowels and consonants is just good manners as far as I'm concerned.
I find I reluctantly go along with the majority much of the time, just to avoid the guffawing that would ensue, but personally I'd rather say "Yon Carev" (if that's correct) than "John Caroo".
But that would ruin the song! :-)
I noticed on MOTD last night that David Luiz has now become
da-vid lueesh.
Other belters include karim el acmedi, ole gunner sol-shara, & john motsons cringeworthy
jochim luuurv!!