  A bottom-up approach has been adopted to identify a flavour model that agrees
with present experimental measurements. The charged fermion mass hierarchies
suggest that only the top Yukawa term should be present at the renormalisable
level. The flavour symmetry of the Lagrangian including the fermionic kinetic
terms and only the top Yukawa is then a combination of U (2) and U(3) factors.
Lighter charged fermion and active neutrino masses and quark and lepton mixings
arise considering specific spurion fields. The associated phenomenology is
investigated and the model turns out to have almost the same flavour protection
of the Minimal Flavour Violation, in both quark and lepton sectors. Promoting
the spurions to be dynamical fields, the associated scalar potential is also
studied and a minimum is identified such that fermion masses and mixings are
correctly reproduced.
