I'll list top 5 players from each team. I think I'd go with Stuttgart...
AZ Alkmaar
Esteban (GK) - talented young GK
Beerens (AMRL) - explosive young winger (natural right), good dribbler (injury prone though)
Martens (AMLC) - decent left winger
Rasmus Elm (MRC) - young quality creative MC (lacks defensive skill)
Marcellis (DRC) - consistent young DC
Stuttgart
Molinaro (DL) - explosive left full back, decent crossing
Schieber (ST) - fast young complete forward, lacks composure
Kvist (DM/MRC) - brilliant central midfielder
Tasci (DC) - solid DC, lacks positioning
Boulahrouz (DRC) - experienced quality central defender
Parma
Giovinco (AMLC) - excellent attacking midfielder (co-owned)
Crisetig (DM) - a wonderkid wannabe, not ready for first team yet (co-owned)
Mirante (GK) - decent goalkeeper, somewhat dependable
Zaccardo (DRC) - solid DC (even though a natural DR)
Morrone (DM) - experienced quality DM, can pass too
AS Monaco
Koman (AMRLC) - young versatile attacking midfielder, lacks consistency
Giuly (AMRC/FC) - experienced right winger, slightly injury prone
Barazite (AMRLC) - talented attacking midfielder
Tziolis (DM) - decent DM, can pass OK
Muratori (D/WBL) - decent young left full back, injury prone