have someone's finger in the pie

Any Other Business: Expert Finger in the Pie
The NFP sector and heritage management: too many fingers in the pie?.
How Idioms Work
New Finger in the Pie at Cardiff
A Foot in Every Camp, a Finger in Every Pie from Downing Street to Pearson, to Lazards, to the Law Society - Every One Wants a Piece...
ONE IN THE PIE FOR YUVRAJ; Brilliant Pietersen Tucks into 'Chucker' Singh's Buffet Bowling INDIA V ENGLAND THE SECOND TEST, DAY THRE...
Young's finger in NL's `Pie'
Metropolitan High-Technology Industry Growth in the Mid 1970s: Can Everyone Have a Slice of the High-Tech Pie
PIE CONTAINER
Things Pie Do to Earna Crust