Galatasaray reportedly allowed their Felipe Melo option to run out in a bid to get him at a cut-price from Juventus.
The Turkish club had until April 30 to sign the midfielder, now 29, on a permanent basis for a pre-agreed €6.5m.
However, according to Hurriyet, Galatasaray ignored that deadline because they are looking to net the Brazilian for around €4m instead.
Melo, signed by Juve from Fiorentina in 2009 for €25m, has been on loan with the Istanbul outfit for the last two years.
Betting on Serie A? Bet365 are offering a 100% deposit bonus, up to £200 - find out more