Both players, McCarthy argues, displayed the strength of mind he expects from any future recruits.
"Fletch couldn't get back into the team and probably felt a little bit disenchanted with life because he had been playing all the time," said the Wolves boss.
"Maybe his form suffered but he turned out to be every bit the player I thought I was signing, and Hunty came back and was not right. He didn't really get back to his form, he was vying with an England left winger and was struggling when he came back again.
"We sent him for a hernia operation and he showed his quality in the last three or four games and ultimately scored the goal that kept the club in the Premier League.
"We've got good Premier League players, some that haven't contributed as much because of injury, because of circumstances - and that was Fletcher and Hunt who were a bit part-time last year.
"It didn't work out for Steven Mouyokolo and it didn't work out for Jelle Van Damme - we got our dough back on that one - but overall we've got the nucleus of a 40-point Premier League side that played in the hardest league for a long time and is still here."