Every formation fields a minimum of two centre backs, and therefore it is crucial to have a good understanding with your defending counterparts. This can be seen especially when one of the defenders comes out to challenge the attacker and the other covers up in his place.
An offside trap requires great chemistry between the two men at the back in order for it to be successful, requiring both the defenders to push forward in unison. Having such excellent chemistry and coordination can make a defence extremely solid, even without any world class defenders present. Proof of this statement is in Robert Huth and Wes Morgan’s partnership that won Leicester the league last season.