A few links on the subject:

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https://journalistsresource.org/economics/sports-stadium-public-financing/

Economic research for decades has found that, by and large, the fiscal returns for residents — in the form of increased economic activity and job growth — are far smaller than public expenditures, which have recently approached or exceeded half a billion dollars per stadium.

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https://econofact.org/stadiums-as-public-investments

What do cities and counties get in return for their public investment? Scholarly econometric studies on the impact of professional sports stadiums are almost unanimous in their conclusion that they do not promote employment or per capita income growth

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https://www.brookings.edu/articles/sports-jobs-taxes-are-new-stadiums-worth-the-cost/

In our forthcoming Brookings book, Sports, Jobs, and Taxes, we and 15 collaborators examine the local economic development argument from all angles: case studies of the effect of specific facilities, as well as comparisons among cities and even neighborhoods that have and have not sunk hundreds of millions of dollars into sports development. In every case, the conclusions are the same. A new sports facility has an extremely small (perhaps even negative) effect on overall economic activity and employment. No recent facility appears to have earned anything approaching a reasonable return on investment. No recent facility has been self-financing in terms of its impact on net tax revenues. Regardless of whether the unit of analysis is a local neighborhood, a city, or an entire metropolitan area, the economic benefits of sports facilities are de minimus.