To get low on some players in manager mode you should pay attention to the life of the contracts. This should be the beginning of the season, 1 year, can make a bargain. Either you buy these players at the start or wait until the winter break. During the winter break can select the desired players and offer them a contract for next season without having to pay a transfer fee.
Examples of players with a contract under one year:
-Sami Khedira GES 84 (Real Madrid)
- Dani Alves GES 83 (FC Barcelona)
-Steven Gerrard GES 82 (Liverpool)
- Danny GES 82 (Zenit St Petersburg)
-James Milner GES 78 (Manchester City)
-Andre Ayew GES 78 (Olympique Marseille)
-Andre-Pierre Gignac GES 78 (Olympique Marseille)
-Bryan Ruiz GES 78 (Fulham)
-Andrea Ranochhia GES 77 (Inter Milan)
-Christopher Samba GES 77 (Dinamo Moscow)
-Neto GES 76 (Fiorentina)
-Glen Johnson GES 76 (Liverpool)
-Ignazio Abate GES 74 (AC Milan)
One more tip: once players agree with you during the winter break for the next season, make sure that you have enough salary budget, because that is you already deducted in the current season.