Didn't Ivan have #23 before Veron got here?, anyways, Veron (if he stays) will remain with his 23, he'd only change it for #11, as far as Claudio goes, he will wear Sergio's #7, If Crespo were to get #10 he'd switch it with nedved so he can pull a Zamorano wearing the now famous 1+8. BUT I think that won't happen

because he will get Salas' #9 (Salas is leaving you know)...so, #10 is Ivan's UNLESS, "la brujita" switches with him.
De la Peña 10
Crespo 9
Nedved 18
López 7
Verón 23
that's how i see it.
PS- I'd love to see Crespo weraing #1+8