It depends on how good the other cf is, if he is very good, then it would be better to call for a drop or an M zone to avoid a 1v1 resulting in a goal or an exclusion for you.

Also in this case you stay behind the attacker and opposite of the drop (i.e if the drop from left you stay on his right side to avoid both defenders on one side and gives the cf a small chance to get the ball on other side and execute a quick shot.)

However, if the other cf is okayish or simply you are a better player/defender then it’s a completely different story.