USA: Philadelphia Eric Ayuk Mbu

The Union announced Tuesday that they have signed two young players, Raymond Lee and Eric Ayuk Mbu, that have been training with the club during the preseason. Lee, a defender, was the Union’s fourth-round pick (No. 71 overall) in the 2015 MLS SuperDraft. The 21-year-old was a four-year starter at Saint Louis and was named…