Who played left-back for Man United in the 1968 European Cup Final?

In doing research on the show, I came across a deleted scene mentioning the 1968 European Cup Final, and who played Left Back.

According to Holly in the scene, it was Shay Brennan, then corrected himself by saying Tony Dunn. According to the notes here on G&T for the scripts of that scene, however, He was right the first time.

Now, according to wikipedia, it was, in fact, Tony Dunn. I don’t necessarily trust Wikipedia, so can anyone link me another source verifying one way or another? I’m having an odd amount of difficulty verifying this one tidbit of information. Thanks!