49ers defensive tackle Alfred Collins tore his patellar tendon in practice this week, according to coach Kyle Shanahan. Collins is out for the season.

The 49ers had listed Collins as a limited participant in Tuesday’s practice. (The 49ers are in Australia, so it was Wednesday in Australia.)

The 49ers have Osa Odighizuwa, CJ West, Gracen Halton and James Thompson Jr. left at the position. In the first official practice of the week, Thompson missed practice with a hamstring injury, and Halton was limited with an ankle injury.

It seems likely the 49ers will call up one of their practice squad defensive tackles — Sebastian Valdez or Kevin Givens…

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