Kilmarnock have completed the signing of former Wales Under-21 goalkeeper Kyle Letheren.

Letheren has been signed as back-up to Cammy Bell with Alan Combe struggling to regain fitness following hernia problems.

Letheren started his career with Swansea before moving to Barnsley, where he made his only first-team appearance in the Football League, and then Plymouth Argyle last season.

The 22-year-old almost joined Motherwell in April but the Lanarkshire club’s emergency loan request was blocked.

St Johnstone manager Derek McInnes has revealed the club will not be signing Stuart Duff despite his appearance against Bolton on Monday.

Duff, who was released by Aberdeen at the end of last season, lined up at right-back in a 2-0 friendly defeat at McDiarmid Park.

The 28-year-old has been training with Saints but McInnes is unable to offer him a deal with the club.

“I couldn’t go anywhere with it even if I wanted to,” the St Johnstone boss told the club’s official website.

“I’ve offered Stuart training facilities which helps him and he is helping us by playing when required.

“Dave Mackay is injured and Liam Caddis was feeling a bit leggy after his game against Manchester United and so Stuart helped us out.”

St Johnstone manager Derek McInnes has returned to former club West Brom to sign striker Marcus Haber on a season-long loan.

The 21-year-old Canadian joined Albion from the Vancouver Whitecaps on an 18-month contract in January but he has not made a first-team appearance.

The 6ft 3in frontman has already had two loan spells, with Exeter and Vancouver, and he will see out his contract in the Scottish Premier League, although the Baggies have a one-year option on his deal.