The future of defender Marius Zaliukas, another senior player left out of the 20-man squad who headed to the continent, also looks in serious doubt.
Like Kenny, Zaliukas, 30, is contracted to Leeds for the 2014-15 campaign, with his deal expiring next summer.
Speculation has suggested the Lithuanian international could leave the club by mutual consent, with the former Hearts stopper having only signed an 18-month deal last October after impressing former boss Brian McDermott.
Zaliukas made 16 appearances for the Whites last season.
Forteller hvor elendig McDermott var til å vurdere spillere:
Kebe, Hunt, Zaliukas, Stewart, Agybiyiii-hi fra Southampton... osv osv