First time post and pure speculation but if I put my championship manager hat on and put myself in Greg's shoes I think we have a lot to offer players of smaller world cup teams who may be pushing to make the squad.
As an example and having checked transfermarkt for free agents etc a 1 year deal for any of the below centre backs would be an interesting proposition - granted I can't say I've watched any of them play religiously but their pedigree looks good - and the discussion around wage structure is offset by lack of transfer fee
Timothee Kolodziejczak - dual national French/Polish, spent his career in La Liga and Ligue 1. Plays centre back and left back and has been released by Saint Etienne in the summer. Completion for Centre backs for Poland is scarce especially as they play with 3 (22 year old lower level Seria A league centre back, 25 year old lower level Ligue 1 centre back). Obviously there is a lot of dominoes to this but on the face of it is interesting. Apparently qualifies for a work permit.
Same idea for John Brooks who has spent his entire career in the Bundesliga before being released in the Summer. 29/30 years old and last chance at a world cup for America. Again a centre back and a discussion might be there to be had. Qualifies for a WP according to the checker website.
N'Koulou - Cameroonian spent his career in Seria A. Played 3 games for Watford last year before being released. Same idea ref short term gamble which might be an alternative to a loan.
Zegeelar - Dutch left back, also released by Watford after 54 games for Udinese. Aged 31 and ex Ajax youth so you'd expect could cope with the attacking side of JDTs system.
Others out of a contact too Lewis Grabban aged 34 with 12 goals last year for Forrest and Miguel Hector long time championship centre back
None fit with the Bodo/Glimt recruitment of lower league/youth but they do all potentially fill a gap and we may benefit from owning rather than loaning