Evans, 20, who arrived on loan from Manchester United in January, will clash head-on with fellow Tigers midfielder Koren in Tuesday's Group C qualifier at Windsor Park.
Both players played the full 90 minutes for their respective countries on Saturday. Evans played alongside brother Jonny in Northern Ireland's 2-1 defeat in Serbia, while Koren featured in Slovenia's 1-0 reverse against Italy.
Meanwhile, Hull midfielder Kevin Kilbane, currently on loan at Huddersfield, was also in international action over the weekend as the Republic of Ireland beat Macedionia 2-1 in Dublin.
Kilbane played the full 90 minutes and was back in Huddersfield in time to make the substitutes' bench for their 3-0 win over Notts County on Sunday.