ROME, March 30 (Reuters) - Activist investor fund

Bluebell, as well as minority shareholder Merlyn, have presented

rival slates of candidates for the renewal of the board of

Telecom Italia (TIM) , the Italian phone group said on

Saturday.

Shareholders are due to vote on the lists on April 23.

Current CEO Pietro Labriola is looking for a second term as

part of another slate of candidates put forward by TIM's

outgoing directors, and there is also a fourth list of

candidates from small investors' group ASATI.

Bluebell has put forward six candidates, including former

TIM director Paola Giannotti De Ponti, proposing her for the

chair position, but did not offer any candidates for CEO, TIM

said in a statement.

Merlyn's list has 10 names, including former TIM deputy

general manager Stefano Siragusa for the role of CEO and former

Microsoft executive Umberto Paolucci for the chairmanship, the

phone group added.

ASATI's list has no candidates for CEO or chair.

The board is being renewed while Labriola is under pressure

over his flagship plan to sell TIM's fixed network assets to

U.S. fund KKR to reduce the phone group's historically

high debt levels.

TIM's share price suffered a record plunge this month after

Labriola unveiled the financial outlook for the business

emerging from the asset sale, which is supported by the Italian

government but opposed by TIM's top investor Vivendi.

With its 24% stake, the French media giant could stand in

the way of Labriola's reappointment if it decides to back a

slate proposing a new CEO. Merlyn, however, has said it is in

favour of completing the deal with KKR.

TIM's shares are down by more than 23% in the year to date,

last trading at the close of markets on Thursday at 0.2251

euros.