Not only he got jeered, but there were some banners written on it: There's only one captain with number 6 next to it, referring to Baresi.
I remember Al-Jazeera commentators saying something like,
look at the difference, how Pavel Nedved is appreciated and is given respect from Juve fans while Maldini receiving jeers, it's incredible how classless Milan fans took this.
They both retired on the same day.