More experienced:
Joseph Yobo - Everton is the pinnacle of Cb in my opinion (maybe about 12 million for him, great leader too)
Luisao - Benfica (got experience)
Naldo - Werder
Younger:
Lukas Sinkiewicz - Leverkeusen
Holger Badstuber - Bayern
David Luiz - Benfica
off my Recommendation list:
Bruno Alves - Porto (8 million) *
Martin Demichelis - Bayern (15 million) *
Luisao - Benfica (5 million)
Benedikt Howedes - Schalke (9 million)
Sidnei - Benfica (3 million)
David Luiz - Benfica (4 million)
Lucas Sinkiwiecz - Leverkeusen (6.6 million)
Serdar Tasci - Stuttgart (9 million)
Ivan Marcano - Villareal (8 million) *
Federico Fazio - Sevilla (12 million)
Alex Silva - HSV (6 million)
Ayila Yussuf - Dinamo Kiev (6 million)
Pape Diakhate - Dinamo Kiev (6 million)
Mathias Jorgensen - Kobenhavn (3 million) *
Diego Lugano - Fenerbahce (10 million)
Allessandro Gamberini - Fiorentina (9 million)
Bakary Soumare - USBCO (5 million)
Felipe - Udinese (10 million)
Dirk Mecheilis - PSV (9 million)
Sylvain Armand - PSG (6 million)
Moustapha Bayal - St Ettiene (7 million)
Naldo - Bremen (9 million)
Mirel Radoi - Al Hilal (6 million) *
Mathieu Bodmer - Lyon (14 million)
Nicolas N'Kolou - Monaco (8 million)
Per Mertesacker - Bremen (19 million, a little steep, but worth it) *
Vegard Forren - Molde (1.5 million)
Andrea Barzagli - Wolfsburg (10 million)
Breno - Bayern (11 million)
Mats Hummels - Dortmund (7.5 million)
Henrique - Bordeux (6 million)
Sebastian Pygrenier - Zenit (4.5 million 2nd season)
Geromel - Koln (6.5 million)
Hector Moreno - Az (4 million, decent as backup to 1st team)
Andreas Granqvist - Fc Gronigen (5.5 million)
Servin Cetin - Fenerbahce (11 million)
Simon Kjaer - Palermo (12 million) *
Dorin Goian - Palermo (6 million)
Nelson Rivas - Inter (2 million, good backup)
Diego Godin - Villareal (11 million)
Roland Juhasz - Anderlecht (7 million, good backup too)
Sergey Ignasevich - CSKA (7 million, captain material)
Juan Forlin - Espanyol (6.8 million)
Daniel Agger - Liverpool (14 million)
Avram Papodoplous - Olyimpiakos (6 million, good backup)
Fabricio Collccini - Newcastle (8 million)
Gary Caldwell - Celtic (7.7 million)
try download the shortlist on the link below (1st page of thread)
it is a Cb and St shortlist with all the players, plus more that are listed there, maybe you might find some decent players there?