Rommel was also planning an attack in November 1941. He hoped to attack Tobruk again, but the situation at sea put that plan into jeopardy. The British anti-shipping campaign was doing so well that Rommel's supply situation was becoming increasingly difficult. The OKH was concerned that the British planned top lift the seige of Tobruk, and then shift forces to defend the Caucasus. The Italians were more concerned that the British planned take the whole of Tobruk.
The Italian high command warned General Bastico that the British planned to launch an offensive soon. Generals Bastico and Rommel thought that would not be possible. Rommel, in any case, thought that he had sufficient forces to deal with any such attack, while he broke into Tobruk. This is based on the account in Vol.III of the Official History.