Normally yes, but it's not unheard of for a club to entice a player to come by guaranteeing an armband. See: Thierry HenryEvery work place has its leaders, locker room culture dictates a leader will appear, I wouldn't even try and judge until the team are together.
Don't know if this has been posted...must be the best candidate alongside Lampard.
http://www.sltrib.com/blogs/rsl/1932960-155/ned-grabavoy-opens-up-about-departure
"He texted me and just said, ‘Hope you have your bags packed.’ I kind of laughed and then he immediately followed up with — as only Jason would — by saying, ‘Start getting fit.’ That just kind of shows you where his mind’s at a little bit.