The suggested player on the manage my team page also doesn't have to be within your buying power :)
No, the suggested player on the manage my team page is within one's buying power. The minimum price possible is...as far as I can remember, $20,000. So you have less than $20,000 in your bank (let's say only $4000, then the suggested player on the manage my team page will be a player who's current bid (or the price) is at $20,000.