Glover Mallory is supposed to have an extra dialogue which points the player to Drovas Relvi just like Dreyla Alor and Geldis Sadri do if the player has joined the Thieves Guild duiring the quest Reluctant Steward. However, this dialogue never occurs because it is wrongly assigned to Crescius Caerellius rather than Glover Mallory.
Here is the fix of this issue. It just works fine.

Attached Files:
Reluctant_Steward_Fix.esp