Aston Villa are likely to sell a number of players this summer.
Villa will be required to sell many of their players in the upcoming transfer window, as they no longer have Premier League football to finance their current wage bill.
Di Matteo is not under extreme pressure to sell players who he doesn’t want to leave, but the Italian admits that his squad is bloated at he moment.
"First of all when I analysed the squad I think we have too many players, the squad is too big so I will certainly look to trim the squad," he said.
"I will try to identify the right players for this season that will give us an edge and improve the team in many aspects. Physical aspects, technical aspects and also the human aspects.
"It’s important that we create a group of individuals that work as a team. I think that’s vital that we have a good, united team on the pitch.”
There are a number of Villa players whose futures look uncertain, after what was a disastrous campaign last time around.
The Claret and Blues won just three Premier League matches last season, causing them to finish bottom of the table by a considerable distance.
Villa are likely to have a clear out this summer, with plenty of players at risk of being offloaded.
Di Matteo has also spoken of his desire to make some additions, with Tommy Elphick looking likely to be his first signing at the Midlands club.