Derby County are likely to make a number of changes to their squad over the summer.
Derby missed out on the promotion to the Premier League, after a disastrous end to the campaign, and McClaren is looking to shake up his squad for the new season.
The Rams are likely to be amongst the favourites for promotion again next term and McClaren feels that an overhaul will be required to get them over the line.
“In the time we have been here we believe that we have created a culture and a positive environment, but now I think it is time to put a bit more of our stamp on things," he said.
“We want to freshen things up and kick on; perhaps we have to be ruthless in what we do with regards with what we keep, what we let go and what we continue to do moving forwards.”
There have been rumours in the Derby Telegraph that Jamie Ward could be one high profile player to leave the iPro Stadium, with his contract expiring, and it seems that more could follow.
McClaren's men have fallen short at the final hurdle for two seasons running and the former England boss is leaving no stone unturned in his hope of strengthening his squad.
If Derby do allow some of their longer-serving players to leave, it seems that McClaren will be open to new additions over the coming months.
The Rams already have one of the strongest squads in the second tier, but identifying the right additions will be key, if they are to make it third time lucky next season.