Celtic are planning to build an indoor "football arena" as part of a huge redevelopment of their Barrowfield training ground in Glasgow.

The Scottish champions have applied for planning permission to transform the site, in the east end of the city.

While the Celtic first-team trains at a purpose-built facility in Lennoxtown, which opened in 2007, youth squads continue to use Barrowfield, a short distance from Celtic Park.

The club said the indoor facility would be "one of the largest in Scotland" and feature a full-sized artificial pitch.

Celtic also want to build spectator facilities, a new gym and changing rooms at the Barrowfield site.

They said in a statement: "The new indoor facility will allow training opportunities, particularly in poor weather, for the Celtic first team.

"The complex will also be used by Celtic's women's teams and all academy teams.

"Ultimately, the new site will feature two full-sized outdoor grass pitches, two first-class artificial pitches, both outdoor and indoor, as well as an outdoor warm-up area.

"The new development will complement Celtic's established first-team training base at Lennoxtown, which was opened in 2007 and has been a huge success.

"These new developments will further enhance the opportunities for all club teams, offering hugely improved facilities and a brand new, first-class training environment."