The Bianconeri director believes his side's Champions League draw could have been worse but warned of the threat that Galatasaray pose
The Bianconeri, who reached the quarter-finals of last year's competition, approached the draw as a pot two team and Marotta has accepted that the group could have been far tougher.
"It is a draw of medium difficulty. It could have been better, could have been worse," he said.
Marotta also warned his troops that they must be wary of Galatasaray, particularly on the trip to Istanbul.
"We believe that, while Galatasaray were in pot three, they are a very good side and got to the quarter-finals last season, which proves they are tough.
"They won a trophy in the last few days in Turkey and in Fatih Terim they have a great coach. We know that the fans can make it tough, but they're also difficult opponents."
Paris Saint-Germain were also second seeds but were handed a seemingly easier group, with Benfica Olympiakos and Anderlecht as competition, but Marotta feels the French champions will still have their work cut out.
"It's a group of many possibilities. There are still four teams in there that can make anything happen."
PSG striker Zlatan Ibrahimovic, who represented the Turin giants earlier in his career, has never won the tournament but the 56-year-old feels he could still claim Europe's top prize before calling it quits.
"He remains a top player and he has a lot of quality, so you can't say it will never happen for him."