MADRID - United Arab Emirates-based EMSTEEL is interested in Spanish steelmaker Celsa's mills in Poland, Britain and Norway, which have a combined value of about 1 billion euros ($1.11 billion), Spanish newspaper el Economista said on Tuesday, citing unidentified sources.

EMSTEEL, previously known as Emirates Steel, is controlled by the Emirati sovereign wealth fund Abu Dhabi Developmental Holding Company (ADQ).

The disposal of these overseas units, part of Celsa’s restructuring plan, was launched in February. While it is unclear if all three businesses will be sold in a single transaction, such a sale could ease Celsa's situation.

EMSTEEL, ADQ, Celsa did not respond to requests for comment.

($1 = 0.9003 euros)

(Reporting by Natalia Siniawski, editing by Inti Landauro and Louise Heavens)