Shinji Kagawa’s pornstar WAG, Ameri Ichinose

Looks like Shinji Kagawa is bringing entertainment not just on the Old Trafford pitch, but off it as well.

The new Manchester United midfielder, signed from German champions Borussia Dortmund for S$33.5million (£17million) over the summer, is apparently not the Japanese boy-next-door as he appears to be.

One look at his girlfriend, who can fittingly be called a Red Devil herself, and you will know what I mean.

Ameri Ichinose is a Japanese adult entertainer -- or put it bluntly a porn star. A quick search on the web will provide you a pretty good idea of what she will bring to the Old Trafford stands when the new season kicks off.

The 24-year-old, who has also worked under the names adult entertainment sensations Erika Kurisu and Ayaka Misora, started appearing in porn movies in 2006 following a successful career as a glamour model.

And with Kagawa's meteoric rise to fame during his dazzling two-year spell at Borussia Dortmund and his big-money move to United, it's little surprise the pair found their way into each others' arms.

His personal life aside, Sir Alex Ferguson and United fans will be hoping the Japan international will be firing on all cylinders on the pitch rather than off it, especially when Ameri has made no secret of her love for sex, saying, "the nastier the better".

If the 23-year-old fails to deliver on the pitch, be sure that Fergie will not hesitate to give dish him the treatment David Beckham received due to the distraction which came in the form of his wife Victoria.