The MLS outfit have also invited Cardiff City striker Robert Earnshaw for a trial, with the Welshman's contract expiring at the end of the season.
"We're in hopefully the final stages of signing him to a loan agreement with Queens Park Rangers. We hope that will be concluded in the next day or two," he was quoted as saying on the official MLS website.
"[Earnshaw] arrives to take a look at us and for us to take a look at him to see if that's a fit that might work. It's a little too early to tell if that's going to happen."