By Ilaina Jonas

NEW YORK (Reuters) - General Growth Properties Inc has paired with Brookfield Office Properties in a bid for one of the most sought after Manhattan office buildings on the market, making what could be the mall owner's entry into the urban street retail real estate market, according to sources familiar with the deal.

Bids for 650 Madison Avenue could exceed $1.3 billion, according to sources who were not authorized to speak publicly. The decision on the winning bid is expected next week, said one source.

(Reporting by Ilaina Jonas)