West Ham United drew 1-1 with Manchester United in the FA Cup quarter-final.
Reid had been out with injury for over a month prior to West Ham’s match at Old Traoffrd, and he had only been able to participate in two training sessions.
As a result, Bilic was keen to ensure that the New Zeland international was fit enough to start in the contest - and they had a lengthy chat to asses Reid’s condition.
In the end, the 27-year-old got the nod to start and he did not disappoint, as he put in an excellent display, before being substituted just after the hour mark.
“I had a conversation with the manager and we had to see how I felt,” Reid said. “I felt alright and I tried to keep it simple. It is nice to be back out there and with a week’s training behind me, I look forward to facing Chelsea next weekend.
“I think when you get booked after a minute or so. You have to play carefully and that tempers how you can play. I felt a bit of cramp, I didn’t pull my hamstring though.”
Reid was off the pitch when most the action happened in the match, with both goals coming late on.
Dimitri Payet first curled in a stunning free kick from long-range, which looked set to win the tie.
However, Anthony Martial struck an equaliser late on - to send the tie to a replay.
West Ham will now host the Red Devils at Upton Park, with the winner set to book their place at Wembley, where they will meet Everton.