49ers need defensive line depth

The San Francisco 49ers are considering what to do at nose tackle now that it is certain Ian Williams is out for the year.

As expected, San Francisco coach Jim Harbaugh said Williams is out for the season with a broken ankle he suffered in the team’s 29-3 defeat at Seattle on Sunday night. Glenn Dorsey replaced Williams and he will start.

Dorsey is a starting-quality player, but the 49ers are thin behind him. San Francisco will surely look to add at the position. But don’t expect any quick fixes. There might be some players on the street who can help, but none will be better than Dorsey. That’s fine. The 49ers just need depth there.

There is one available veteran who could potentially be attractive and that’s former Oakland defensive tackle Richard Seymour. He is best suited as a 3-4 defensive lineman.

But there are issues. Seymour will be 34 next month. His play has declined and there have been reports he is only interested in playing with a big contract. There is little chance the 49ers would break the bank for a player who would come in, need conditioning time and then just be a rotational player.

So, in the end, the 49ers will find someone, but don’t expect a major jolt here.