Plus one of ur players might get an extra skill point for the MoM if u win!!! My opinions are strongly in favour of friendlies but don't be selfish and see that ur frnd has no upcoming match for atleast 15 hours. If there is no match within that time period, only then play ur friendly. If u play some 15 mins be4 ur frnds kick off and then he loses an important match, he might come up for a revenge!!!!!! Who know!!!!