[Nielsio]

[ QUOTE ]
I would fold preflop,even if he is rasing alot,and it"s 4 handed,
A7 is not the hand you want to play oop,there is not alot of good flop for a7,and you will get yourself in tough spots.
That said,I would call the turn,and see if he bets the river.Or I would bet 3/4 of the pot on the river myself.I doubt he would raise with out a better hand.

[/ QUOTE ]

I doubt he'll call without a hand that beats him. 1/2-2/3 max