The attacker has signed an extension to his current deal, keeping him at the club until 2020.
Sheffield Wednesday lost against Middlesbrough in the Championship on Sunday.
Four players from the Yorkshire club, including Barry Bannan, are away with their countries.
Bannan has been rejuvenated at Sheffield Wednesday.
Sheffield Wednesday boss Carlos Carvalhal has spoken about why he took off Barry Bannan during the victory over Huddersfield Town.
Sheffield Wednesday head to Wales to take on Cardiff City.
Do not sleep in on Sunday or you will miss this all-Yorkshire clash at the John Smith's Stadium.
Wednesday midfielder Bannan has insisted that Scotland's World Cup hopes are not over despite a disappointing set of results.
Sheffield Wednesday's Barry Bannan refuses to give up on his World Cup dream despite Scotland's poor result against Lithuania.
The Owls duo faced an Ibrox-Easter Road dream team in what was an entertaining encounter at the Scotland camp.