The San Francisco 49ers are right at the NFL's salary cap, with just $391,000 to spare, according to a source.

The 49ers have the least amount of cap space in the NFL.

But the 49ers are well-positioned for future seasons.

The 49ers restructured the contract of Patrick Willis last year that would take his cap number to $17.6 this season and drop to $3.2 million next season.

The 49ers have 43 players under contract for next season at a cost of $118.6 million. The salary cap this year is $120.6 million.