Pretty sure that Muhammad has only played 2 years of college ball at San Jose State. He would have to sit out this season and have two seasons left.
Larranaga wants to have another guard signed up for next year as we only have three currently (four if you include Lawrence), a grad transfer would not help 2016-2017's situation.
I'd count Lawrence as a swingman, same mold as Reed. If you count those two with Angel/Sheldon/Palmer/Newton, we'll have 6 guys capable of playing a G spot.
We had an embarrassment of guards on last season's roster and Lecomte/Burnett transferred out due to wanting more minutes to play. Among those 6 guys capable of putting in minutes at G, we'll be fine. The minutes will work themselves out.