Tuttosport claimed in today's edition that AC Milan is testing the ground for Douglas Costa who is on loan at Bayern Munich from Juventus.
The Juventus-owned player is not enjoying too much space for the German giants and has not started many games. The club already decided that they will not exercise the buy-option to keep him with them. He could even be freed immediately and AC Milan is monitoring the progress of the situation.
However, according to Tuttosport, if the operation were to go through in favour of the Rossoneri, Castillejo, who was unconvincing in the latest matches of the team, could leave the Rossoneri club and return to Spain.