Celtic keeper David Marshall came to attention when during a memorable Celtic Park UEFA Cup win over Barcelona in March 2004 when he saved a Ronaldinho penalty in a 1-0 victory after Rab Douglas had been red carded. He made 47 appearances for Celtic, winning two international caps, before losing his place to Polish number one Arthur Boruc.

He joined Norwich City on 17th January 2007 on loan until the end of the season. Marshall was handed Robert Green's number one squad number. The 21-year-old revealed the chance of first team football under one of his boyhood idols lay behind a Carrow Road switch. “I grew up watching Peter Grant play for Celtic so I know how passionate he is. I've been speaking to him over the last couple of days and he's shown me he wants to get Norwich back to where they belong. I'm here to help and hopefully we can pick up a few wins and get us back up there.”

Grant was delighted to finally complete his third transfer window signing following the permanent deals for Luke Chadwick and Chris Brown. “Everyone knows I wanted David here. The lad is a talented goalkeeper and I never made any secret of my admiration for him.”

David injured his ankle ten minutes into the FA Cup fifith round tie at Chelsea on 17th February 2007 and was ruled out for the rest of the season.

Relaising that he would not be first-choice at Celtic for the 2007/8 season behid Boruc and with competition from former Inverness stopper Mark Brown and academy prospect Michael McGovern, David submitted a transfer request at the end of May 2007. Norwich were said to have made a £500,000 bid whics rejected by Celtic, although the suggestion is that a deal is likely to be brokered for Marshall. David finally signed a three-year contract with Norwich City on 4th July 2007, with the transfer fee believed to be close to £1,000,000.

David made his second Norwich debut on the opening day of the 2007/8 season in the 0-0 draw against Preston at Deepdale.His fine form for Norwich during the pre-season saw him called up to the Scotland squad for the friendly against South Africa in August 2007.