Before the season kicked off, New York Cosmos coach Gio Savarese confirmed that the club were still looking to add one more body to the defense, the midfield, and the attack, in addition to the fourth goalkeeper (Keasel Broome) that they signed in the buildup to the regular season. The club hasn't confirmed any other signings since that time, but on Tuesday, reports in El Salvador are suggesting that the club are in talks with 23-year old midfielder Oscar Ceren*.
*H/T to Empire of Soccer
Ceren would provide additional depth to the midfield, though I'd think he'd see considerably more time with Cosmos B initially than he would with the first team. He plays primarily on the left (though he can play as a second striker, on the right, or as a traditional #10 as well), a position which Walter Restrepo seems to have made his own, and which Sebastien Guenzatti also prefers.
On the right, Leo Fernandes seems unlikely to be going anywhere, unless the Philadelphia Union decide to recall the wide midfielder. Andres Flores can't get a sniff of the pitch centrally with Raul playing a deeper role, leaving both of those positions as long shots for Ceren to see minutes as well.
As noted in the report, Ceren is still negotiating with quite a few clubs, and his agent is advising him to sit tight before making a decision. The fact that he knows the Cosmos are in talks while being a bit unsure of some other teams involved suggests that the boys in green have a good chance of landing him, but this one is still nothing but a possibility at the moment.