5 transfers that failed to hit the ground running

Bayern Munich's deadline day loan signing Serdar Tasci was expected to ease the club's minor injury crisis in defence, but he suffered a clash of heads during his maiden first team training session and was forced to miss his own press unveiling.

Here is a look at five players who failed to hit the ground runnning after completing transfer moves.

1. Frank Lampard (New York City FC - 2015)

After the hype of joining Chelsea's Premier League rivals Manchester City on loan, Lampard was looking forward to a Major League Soccer debut against Toronto FC. However, the strains of the Premier League caught up with him stateside and a calf strain ruled the former England man out of contention. The same injury also forced Lampard to miss his first MLS all-star game.

2. Mark Viduka (Celtic - 1998)

In 1998 a 23 year-old Mark Viduka went AWOL just days after penning his contract with Celtic following his move from Croatia Zagreb. Although he eventually returned to earn his place with the Hoops, it would not be the last time Viduka courted controversy as a Celtic player.

3. Jerome Boateng (Manchester City - 2010)

Boateng was forced to wait a while for his City debut after the World Cup in South Africa. The German was returning from international duty, but far from enjoying some free drinks on the flight home, he ended up aggravating a knee injury by colliding with the refreshments trolley. Aged 22 at the time, he said that he "imagined his start at City to be quite different, of course."

4. Kim Kallstrom (Arsenal - 2014)

Usually a fine judge of a new signing, Arsene Wenger's winter loan signing in 2014 was not a great success, Spartak Moscow's Kim Kallstrom had been nursing a back injury sustained playing beach football prior to his medical. Wenger agreed to the deal saying "I wouldn't have signed him if we had another two or three days, but it was on Friday at 5pm."

5. Federico Barba (Stuttgart - 2016)

To prove Tasci is not alone in this list, new Stuttgart signing Federico Barba will have to wait up to six weeks for his debut after suffering an injury in a warm-up game. The 22 year-old joined the Swabians on loan from Empoli on transfer deadline day, but picked up the injury just a day later. "It's just incredible misfortune," said Stuttgart's director of sport Robin Dutt on his club's website.