The Kenyan has been excellent since arriving from Southampton this summer, and gives the Tottenham boss viable options in midfield.
The German international was followed by Newcastle United back in 2008.
New Cardiff City boss Neil Warnock says promotion is not impossible at Cardiff City despite the club currently sitting second from bottom.
Derby County striker Chris Martin has spoken about his troubles in front of goal during his current loan spell at Fulham.
Joe Allen has found the net in his last two Premier League games for Stoke City.
Carlton Cole has explained why he left Celtic over the summer.
The reported Tottenham Hotspur target is said to be confident of finding another top club quickly if he leaves Manchester City.
Norwich City, Newcastle United, Reading and Sheffield Wednesday's managers all feature.
Newcastle have been in fine form of late, with a 1-0 win over Rotherham the latest in a string of good results.
Arsenal have a plethora of midfield options, and allowed Jack Wilshere to join Bournemouth on a season-long loan in the summer.