Need help

Guys, this is my lineup and this defender came to me. Who should I put in his place among these two and develop him? Does he deserve a place in the lineup at all or should I throw him away in exchange? + In the CAM position, should I bring Del Piero, Hamsik, or that free palmer+ I got Pedro porro should I exchange him and get Javier Zenati or Pedro is good ? Sorry for the long post