hummmm, medium db limits me a little, but try these:
Chris James, starts the game on a free, midfielder
Lukasz Szafren, Lech, AMC
they will make an instant impact.
Few tips:
On player seach screen, filter to look for players who are not contracted, and then sort them by international caps, you'll find some real gems there.
Formation: keep it simple. a 442 is a simple formation which nearly all players know how to play, dont get too complicated. use this guide to help make your tactics right:
came across it