He, quite rightly was given the nickname Legend by the Chelsea faithful.
Petrescu is becoming a top-class manager in his own right now, and currently is boss of Unirea Urziceni who dispatched Rangers 1-4 at Ibrox on Tuesday in the Champions League.
That in itself is remarkable but what's even more remarkable is the similarity in club crests between his favourite club Chelsea and the one he manages.
Check out this link and see for yourself.
I'm assuming you all know what Chelsea club crest looks like.
Dan's club crest
Thanks to Dan Levene for the tip.