Just this week, Boga raised the option of returning to former club Chelsea.
And brother and agent Daniel revealed: "Leave in January? In football anything can happen, everything is possible, but he started the season with Sassuolo and will end it with them. As he said himself for now he is focused with his team and will give the best for the Sassuolo.
"It is no surprise to me what he is doing, when he was a child in the Chelsea Academy, he was already demonstrating his abilities, so I am not at all surprised."