If I was in charge at Bayer Leverkusen.
Bayer has a quality squad and they usually have strong transfer windows in terms of signings. They have signed Frimpong, Gray and Fosu-Mensah this January, but the squad still lacks depth in some positions. Tah for example started to go downhill in the past two seasons so selling him would be better both for the club and the player. I'm sure there are some clubs who would take him. Leverkusen doesn't really have left footed CBs so Lucumi from KRC Genk would be a good option. Also bringing in young players like I did would really strengthen their future because they have thee potential to become on of the strongest clubs in Europe.