City officials have selected RMS Companies, the sole bidder on the project, to lead development of the vacant parcels near Main and Trumbull streets. A contract between Hartford and RMS will go before the city council in the coming months, and construction could begin as early as next spring. The more than $200 million project would be financed primarily with private funds. RMS will also pursue a loan from the Capital Region Development Authority similar to what the group has given others with robust developments, Salvatore said. He did not disclose a dollar amount.