Low-dimensional quantum magnetism continues to be of great theoretical and experimental interest, as reduced dimensionality supports strong quantum fluctuations which can result in novel excitations and critical behaviour. Muons have been proven to be a powerful means of exploring magnetic critical behaviour and fluctuations in low-dimensional quantum magnets. Here we propose to investigate a newly realized molecular 2D quantum Heisenberg antiferromagnet Cu(pz)2(2-OHpy)22, which is likely to be one of the most ideal two-dimensional systems yet found.