LONDON, Sept 20 (Reuters) - Spain's Cellnex is

exploring a sale of its data centre unit in France, in a deal

that could value the business at a few hundred million euros,

two people familiar with the matter said on Friday.

The largest European mobile phone tower company is talking

with advisers regarding a potential sale, the people said, as

part of its strategy to focus on its core business as it shifts

strategy from acquisitions to bolstering its finances.

Cellnex declined to comment.

Specific revenue figures for Cellnex's French data centre

unit have not been disclosed. However, during the first half of

the year, France emerged as Cellnex's largest market by revenue,

contributing 399 million euros, or 21% of the group's overall

revenue.

In March, the company announced its intention to focus on

four business lines, including Towers, Fiber, Connectivity &

Housing services, Broadcast, and DAS & Small Cells. The towers

business currently accounts for over 80% of the company's total

revenue.

Earlier this year, Cellnex sold its Austrian business for a

enterprise value of 803 million euros and a its Irish unit for

971 million euros.