According to my Football Manager 2018 Demo, he's on 1400 a week, plus 400 a game appearance, with a contract running until 2020. Most of the Southend team are on no more than 2k-2.5k a week, so perhaps he's on that sort of money. I don't think that sort of wage is beyond us for the right player.
Back in January, according to the Southend Chairman, Theo was up for coming to Lincoln on loan.
I'd feel much happier if we could get him back on a permanent deal.