The Morocco international only sealed a big-money move to Allianz Arena on Thursday and was overjoyed when his new club came out in the same group as his former employers just over 24 hours later.
"I am so happy with the draw," Benatia enthused. "I wished for us to play Roma so badly so I could see my friends again. Those will be wonderful matches."
Bayern and Roma will also have Manchester City and CSKA Moscow to contend with in Group E and Philipp Lahm was quick to point out that Pep Guardiola's men will have their work cut out in reaching the last 16.
"That is not an easy group," the Bavarians' skipper stated. "We play three very good teams, including the English champions, Manchester City.
"These are tough tasks, especially away from home."
However, Bayern attacking midfielder Thomas Muller is optimistic that the German champions have enough quality to progress to the knockout stage.
"This is a challenging group," the Germany international staged. "This will be no walk in the park, but we are optimistic we will go through.“