Which general did lincolns cabinet want him to get rid of?

Lincoln's Cabinet wanted him to get rid of General George B. McClellan. Or, perhaps better said, not let him be in charge of major armies, and certainly never again as general- in -chief.

General Henry Halleck was in charge of the West and US Grant reported to him. Halleck believed that Grant almost failed at Shiloh. This was due to Grant being the victim of a surprise Confederate army assault and perhaps not properly fortifying his position at Pittsburg Landing.

Rumors about Grant's drinking problem was also well known

Lincoln urged Halleck to stay with Grant because he believed Grant was a fighting general.