Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 11/2015 |  | Veljko Paunović | MA | |||
| 09/2015 |  | Brian Bliss | MA | |||
| 08/2015 |  | Daneil Cyrus | DF |  | W Connection FC | W Connection FC |
| 07/2015 |  | Gilberto | FW |  | Vasco da Gama - RJ | Vasco da Gama |
| 07/2015 | | Ty Harden | DF |  | San Jose Earthquakes | Earthquakes |
| 04/2015 |  | Jason Johnson | FW |  | Houston Dynamo | H. Dynamo |
| 03/2015 |  | Víctor Pérez | MF |  | Real Valladolid | Valladolid |
| 03/2015 | | Kingsley Bryce | MF | |||
| 02/2015 |  | Marc Bircham | AS-CO | |||
| 01/2015 | | Jon Busch | GK | |||
| 01/2015 |  | Shaun Maloney | MF |  | Wigan Athletic | Wigan |
| 01/2015 | | Matt Polster | DF | |||
| 01/2015 | | Guly | FW | |||
| 01/2015 | | Adaílton | DF |  | Bahia - BA | Bahia |
| 01/2015 | | Eric Gehrig | DF |  | Columbus Crew | Columbus Crew |
| 01/2015 | | Joevin Jones | DF |  | HJK Helsinki | HJK |
| 01/2015 | | Michael Stephens | MF |  | Stabæk IF | Stabæk |
| 01/2015 |  | David Accam | FW |  | Helsingborgs IF | Helsingborgs IF |
| 01/2015 |  | Kennedy Igboananike | FW |  | AIK | AIK |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 08/2015 | | Shaun Maloney | MF |  | Hull City | Hull City |
| 07/2015 | | Víctor Pérez | MF | | Real Valladolid | Valladolid |
| 06/2015 | | Quincy Amarikwa | FW | | San Jose Earthquakes | Earthquakes |
| 04/2015 | | Alex | MF | | Houston Dynamo | H. Dynamo |
| 02/2015 | | Mike Matkovich | AS-CO |  | Des Moines Menace | Des Moines Menace |
| 01/2015 | | Kyle Reynish | GK |  | New York RB | New York RB |
| 01/2015 |  | Bakary Soumaré | DF |  | CF Montréal | Montréal |
| 01/2015 | | Benji Joya | MF |  | Santos Laguna | Santos Laguna |
| 01/2015 | | Victor Pineda | MF |  | Indy Eleven | Indy Eleven |
| 01/2015 |  | Grant Ward | MF |  | Tottenham Hotspur U21 | Hotspur U21 |
| 01/2015 |  | Florent Sinama-Pongolle | FW |  | FC Lausanne-Sport | FC Lausanne |
| 01/2015 | | C.J. Brown | AS-CO |  | New York City FC | NY City FC |