Kovac was 5 times the player that Legro ever was. He was already old when he came to Juve though so his best years were behind him.
But he was one of the rare ones who stayed in serie B despite still being able to find a good team to play for. Kovac could have always found a team in Bundesliga but decided to stay in serie B. For Legro playing for Juve in B was actually a promotion from the Siena's and the likes he played for before we were demoted.