The Mali international hasn't featured since injuring his shoulder against Birmingham in the Carling Cup on November 8th while Zenden hasn't played since he had knee surgery after the 1-0 win over Manchester City on November 29th.
While the manager admitted that Tuesday's trip to West Ham would probably be too early for the pair to return he is confident they will be available for the derby.
"It is good news for us to have Momo and Bolo back and they are both training well," revealed Benitez.
"Momo is flying into tackles in training and showing good energy

http://www.liverpoolfc.tv/news/drilldown/N154828070129-1415.htm
Great news that the MO is back but I dont think Gerrard should move to the right to accomodate him, Rafa is going to have a headache on how to fit the 3 of them into midfield.