Tredwell should play in every match

The off spinner of the England Cricket Team, James Tredwell, is in the national squad that will make its way to Sri Lanka next month for a long One-Day International series.
Tredwell is the only specialist spinner in the squad and considering the nature of Sri Lankan pitches, he should play in every match.
It’s an opportunity for Tredwell to establish his place in the XI. Currently, he is in competition with the Worcestershire player Moeen Ali who seems to be developing pretty quickly as a bowler.
Moeen still can’t be called a full bowler though, but, the way he is making the strides, he would be there pretty soon. The conditions in Sri Lanka are only going to help him.
Barring Sydney, there is hardly any venue in Australia-New Zealand where the spinners have their say. So, England would probably include only one spinner in the XI in most of their World Cup matches and if Moeen shows in Sri Lanka that he is good enough to complete his quota of 10 overs in every match without conceding over an economy rate of 6, he would be preferred over Tredwell as he can bat too and can bat well.
Tredwell definitely has more control over his direction, but, the Kent veteran doesn’t turn the ball that much unlike Moeen who not only has a pretty good off break delivery, but, has a straighter one too which after drifting in a little for the right hander just holds its line and takes the outside edge on most of the occasions.
Tredwell and Moeen would be bowling in tandem on Sri Lankan pitches. Watching them bowl there together would give Alastair Cook a fair idea who would suit better to the conditions down under.