The Argentine has struggled to nail down a regular place in the starting line-up and with the Catalan giants wanting to give a chance to 20-year-old Andreu Fontas, who is a Spain Under-21 international and currently playing for Barca's B team, opportunities look limited.
Nou Camp bosses are looking at ways to save money in order to move for other targets and see Milito as expendable.
They will hope to attract interest from the likes of Arsenal and Manchester City in the 30-year-old, who was signed from fellow Primera Division side Real Zaragoza three years ago.
Milito spent almost two years out injured with anterior cruciate ligament damage in his right knee and Gerard Pique and Carles Puyol have since emerged as the club's favoured defensive partnership.
The defender has started just two of Barcelona's eight Primera Division games so far this season.