you spelled it perfectly. it's pronounced "soboslay" with the special hungarian 'a' at the end. sz in hungarian is the english s
i wasn't convinced about him like a year ago, but he made a huge leap in quality recently. he was picked as the player of the year in the austrian league, he had a brilliant 2nd half of the season. not an insta starter, and as a hungarian footballer, the mental part is unpredictable, but he might be worth the gamble.