Witsel only has a year remaining on his contract with the Bundesliga side and a renewal does not currently seem to be on the cards. This means he could be available on a cut-price deal or on a free transfer next summer.
According to La Gazzetta dello Sport, The issue stopping the two Serie A clubs from making a serious approach thus far is his €7 million a year salary. At 32 years of age, Witsel represents a financial risk.
He is however an extremely consistent and reliable presence in midfield that both sides could benefit from.