Flowery Branch — Disgruntled Falcons wide receiver Joe Horn has not attended the team's three voluntary workouts this week and does not plan to attend any team functions unless they are mandatory, according to his agent.

"These are optional workouts right now and Joe's option is he chose not to be here," Falcons coach Mike Smith said Thursday after a non-contact workout (OTA). "There's not really anything we can do about that. You'd like to have all your guys here but the [collective bargaining agreement] is pretty concrete in what we can do and can't do.

"We've had our mandatory workouts. When we open up [training] camp we anticipate Joe will be here."

On the final day of minicamp earlier this month, Horn, 36, expressed a desire to be traded because he said he felt the team planned on using younger players at wide receiver. Horn, who started most of last season after signing a four-year, free-agent contract worth up to $19 million, said he didn't want to be a "just-in-case guy."

Falcons' general manager Thomas Dimitroff has said he expects Horn to be a part of the team. Ralph Vitolo, Horn's agent, said he has not been granted permission by the Falcons to seek a trade.

One potential hang up is Horn's $2.5 million salary in 2008 is guaranteed. That could be too hefty a price for a team to make a trade. For the Falcons, it could be a hefty price for a wide receiver who might not be in the top-three rotation.

Roddy White and Laurent Robinson have worked as the starting wideouts. Michael Jenkins, Horn and rookie Harry Douglas have worked in a variety of roles in different packages as the second- or third-team receivers.