Just a few possibles, a mix of old, young, cheap etc etc
DL: Marcel Schmelzer (may have moved to Almeria)
Punch Masenamela
Ibrahim Uzulmez
Tomas Hubocan
Philipp Bonig
Jose Maria Basanta
Lee Wallace (Hearts)
Fernando Vega (Betis)
Andreas Ibertsberger
Gianluca Comotto is on a free at the end of the 1st season but he's DR, so if you've got someone who works on both right and left, he'd be good, and if the dl/dr switch is available then maybe rafael/fabio from man utd on loan
MC: Anthony Annan
Facundo Agustinoy (21 year old, he will improve quite a bit)
Marcone (bahia)
Leandro (bahia in the 1st season up to Dec, should be 25/26 y.o.)
Mohamed Diame (wigan)
AMC: Medo (partizan)
Ibrahim Afellay
Anton Putsila
Balazs Dzsudzsak
Dario Conca
Juan Roman Riquelme
ST: Salva and Julio Cruz are on frees in the 1st season, but are generally decreasing like crazy by now, but still possibilities
Martin Palermo (if he hasn't retired)
Liedson (sporting)
Iarley (corinthians)
Humberto Suazo
Vaclav Kadlec
Federico Macheda (loan)
Leigh Griffiths
Garra Dembele (my personal choice for quality vs. price)
Gaston Fernandez (Estudiantes)
Javier Saviola
Pablo Mouche (he's not great at the moment but he improves and will get you goals)