Seahawks reportedly exploring Kelvin Beachum, Donald Penn at left tackle

Entering the week, coming up with a solution at left tackle was among the Seattle Seahawks' top priorities.

And on the third day of free agency, the team appears to be exploring multiple options.

The Seahawks' top option is most likely Russell Okung, but he is testing the market in search of the best offer. According to ESPN's Josina Anderson, Okung has visits lined up with the New York Giants and Detroit Lions. Michael Silver of NFL Network reports the Seahawks and San Francisco 49ers are still in the mix.

Because Okung is representing himself, he was not allowed to communicate with teams during the legal tampering period. Free agency began for him on Wednesday.

There are two other names to watch: Kelvin Beachum and Donald Penn.

Beachum is visiting the New York Jets Friday and has a meeting scheduled with the Seahawks on Monday, according to NFL Network. He has started 39 games in four seasons with the Pittsburgh Steelers. Beachum is coming off of an ACL injury, but will be only 27 years old at the start of next season. When healthy, he is considered a quality starting left tackle, and he would be a nice option for the Seahawks, although there is obviously competition.

A shorter-term option would be Penn. He turns 33 next month, but has been extremely durable, having not missed a game the past eight years. The Seahawks, Giants and Oakland Raiders are all in the mix for Penn, according to Vic Tafur of the San Francisco Chronicle.

Once Okung signs, teams could look to move quickly on Beachum and Penn. They are clearly the top three left tackle options still on the market. The Seahawks look like they're honed in on landing at least one of the players.