You can't as far as I know but if it's really bad, you can just nickname them.
I had a Dutch GK with Sri-lankan parents come up through my youth set up. 5 Star PA and by the time he was 17 he'd replaced ter Stegen as my First choice at Liverpool. . . .but his name was Ravi Kumar Algerbathaa Dechamps (or something to that degree) so I just nicknamed him Ravi