Mark Dempsey's side dominated the majority of proceedings, but the tie will prove to be a key learning opportunity for the young Reds, who were two goals up with little over 20 minutes left to play.
Forson opened the scoring in the first half, rewarding United's early pressure, before Hugill added a second after 68 minutes, finishing a chance that was expertly crafted by his fellow goalscorer.
But as the match entered the closing stages, the hosts came back into the match. Roberts placed an effort beyond Nathan Bishop with 75 minutes on the clock, before fellow substitute Farmer directed his header beyond the United 'keeper just two minutes from time, clinching a late point for Wolves.