James Forrest has shared how he really felt about being subbed off for Celtic against Aberdeen yesterday after being brought on as a second-half substitute himself. The legendary Celtic winger replacedHyunjun Yang at Hampden as Celtic toiled to get past a dogged Aberdeen side. Going behind to an early Bojan Miovski goal set the tone for the day for Celtic but as the scoreline sat at 1-1, Forrest was brought on to replace Yang and he made an instant impact. Scoring in the 63rd minute, it looked like Forrest had tied up the game and sent Celtic to the final. And as Brendan Rodgers looked to see …