As you're obviously struggling with how that generally works I'll help you out. To strengthen a team you generally get rid of your worst players and replace them with far better players and then continue that cycle until the ones you first bought are now the weakest and the next to go. What you don't do is say 'we need better players so lets keep the ***** and get rid of our best players and hope we bring in better'.
So you would keep them all? All over 30 not getting any younger or fitter just think to move forward that what we have to do, just my opinion mate chill
Let's get rid of the lot and turn Oakwell into a go-kart track!! It'd be brilliant, folk will soon forget there ever was a football club! Visionary.