Verizon is scouting locations for a 300,000-square-foot office in Boston and real estate sources say the media giant appears close to a commitment as anchor tenant of a future 24-story office tower at The Hub on Causeway.

Developer Boston Properties has acknowledged negotiations with tech tenants to occupy space in the planned 651,500-square-foot tower in front of the TD Garden. Some speculation centers on Verizon’s digital media subsidiary Oath Inc. as the potential tenant, or a possible consolidation of suburban offices.

“Verizon has a very large requirement not driven by lease expirations and they want a bigger presence in this area,” one local real estate industry executive told Banker & Tradesman.

A 300,000-square-foot lease could accommodate approximately 2,000 employees, given office tenants’ shrinking workspace requirements per person.

Boston Properties late Monday filed redesigned plans for The Hub on Causeway, including a new midrise section with enlarged floor plates spanning over 35,000 square feet on floors eight through 14, a new facade, 31st-floor roof deck, two outdoor terraces and seven 2-story balconies.

A lease for the majority of the office tower would be sufficient for Boston Properties to begin construction, industry sources predict. The Boston-based REIT broke ground on its 888 Boylston St. office tower in 2014 with just 128,000 of the 422,000 square feet in the building leased.

“Demand for space in Boston from growing technology tenants is as strong as we have ever seen it. Hence our discussions with another tenant possibly for the tower at The Hub on Causeway,” Boston Properties President Doug Linde told analysts last month in a conference call.

Boston Properties declined to comment on potential tenants today, citing company policy.

After acquiring Yahoo for $4.5 billion last year, Verizon created Oath to operate Yahoo’s digital media brands, such as Yahoo Finance, as well as other sites including HuffPost and TechCrunch that Verizon acquired when it bought AOL in 2015. Oath has more than 40 locations in North America, including offices at 10 Summer St. and 31 St. James Ave. in Boston and 55 South Bedford St. in Burlington, according to its website, and dual headquarters in Silicon Valley and Manhattan.

Tim Armstrong, the former AOL CEO who now runs Oath, has ties to the Boston area; he founded a financial newspaper in Cambridge shortly after graduating from Connecticut College in 1993. He owned the Boston Blazers indoor lacrosse team, which played its home games at TD Garden before suspending operations in 2011.

Oath did not immediately respond to requests for comment.

The first phase of the Hub on Causeway already has attracted a high-profile tech tenant in online security company Rapid7, which leased 147,000 square feet last fall in the 180,000-square-foot office podium building scheduled for completion later this year. Rapid7 is relocating from 100 Summer St. in Boston and 1 Main St. in Cambridge.

Boston Properties recently added a 38-story, 440-unit apartment tower in phase two of the Hub on Causeway to its active development pipeline. A block away, Equity Residential will begin demolition of the Garden Garage this summer to make way for a 44-story, 469-unit apartment tower at 35 Lomasney Way.

The office tower is the third phase of the 1.9-million-square-foot Hub on Causeway project, which also includes 210,000 square feet of retail and entertainment space. The project is a joint venture with TD Garden owners Delaware North Cos.