Tuncay, a regular starter for the Boro along with Brazilian Afonso Alves, sustained a knee injury in a 2010 World Cup qualifier on Wednesday and will miss Pompey's game.

He is set to undergo further scans to determine his spell on the sidelines.

Mido, who has started the past three Premier League games on the bench, has a big chance now to clinch a place in Gareth Southgate's starting lineup.