Gary's Ray of Euro hope.
But even that can't compare with the success he has achieved with League of Wales minnows Barry Town since he took over as player-coach just seven weeks ago.
Barnett leads Barry into their home clash with Hungarians Budapest Vasutas this Tuesday hoping to overturn a 3-1 deficit from the first leg of their UEFA Cup qualifying round.
And he is hoping to surpass his best moment in football - inspiring Barry to become the first League of Wales team ever to achieve success in Europe when they knocked out Latvians Dinaburg 2-1 on aggregate in the last round.
"That must be the high spot of my career," says Barnett.