Seriously? Whats the problem with buying two players from the same team?
Not necessarily anything. However, it can raise some suspicion. Since there are plenty of players on the market, there is generally no need to buy from the same team twice. Top teams will more often find themselves in a position that only few teams have players that are interesting to them.
Just follow the rules, and you will be fine. This thread concerns cheating accusations (although that does not seem to be intent of OP) and a specific case, so I will therefore remove the message and close the thread.