The Blues boss was spotted amongst the crowd (not difficult at Gresty Road!) as the England under 21 international bagged the second goal for the home side in their 3-0 win against the Pilgrims on Saturday.
Reports over the last week have suggested that Bruce may be interested in trying to prize the forward to St Andrew's come the opening of the transfer window next month as he looks for a targetman to replace the injured Mikael Forssell.
Ashton's goal took his tally for the season to 18 so far for Dari O'Gradi's side.
Local rivals Aston Villa are also rumoured to be monitoring Ashton.