The Vanadium spinels provide ideal systems to study the interactions between spin, lattice and orbital degrees of freedom. The magnetic V3+ ions are antiferromagnetically coupled and located on the vertices a network of corner sharing tetrahedra, which gives rise to three-dimensional geometrical frustration. The two d-electrons of V3+ ion lie in degenerate t2g orbitals introducing an orbital degree of freedom along side the spin, S=1. The V3+ ions interact via direct overlap of their d-orbitals hence the size of the exchange interactions depend strongly on which orbitals are occupied. Ordering of the orbitals would gives rise to a characteristic set of exchange interactions observable in the magnetic excitation spectrum. We propose to study the spin dynamics of a single crystal sample of MgV2O4 in order to determine the exchange couplings giving us an understanding of the V3+ structure.