article_snippet: Johnson enjoyed a successful spell at Watford in the Championship, scoring five in 12 games .
article_snippet: Johnson volleyed home an equaliser against Manchester United in the Carling Cup in 2008 but Boro lost 3-1 .
article_snippet: Johnson relished life in the Championship, and was linked with several the Premier League clubs .
article_snippet: January: Big-spending Manchester City pull off surprise £7m swoop for Johnson. 
article_snippet: Manchester City snapped up Johnson for £7m, and Johnson was named man of the match in debut against Bolton .
article_snippet: Johnson became an England star shortly after Johnson move to Man City, scoring a fine goal against Switzerland .
article_snippet: Johnson lifted the FA Cup with Manchester City, but was about to fall out of favour under Roberto Mancini .
article_snippet: Manchester City claim Premier League in dramatic style, but the season is a frustrating one for Johnson.