6 pages, 1 table, 5 figures.-- El pdf del artículo es la versión pre-print.-- et al.The Li-9 + H-2 reaction has been investigated at 2.36 MeV/u at the REX-ISOLDE facility. In this Letter we focus on the Li-10 + p channel which potentially holds spectroscopic information on the unbound nucleus Li-10. The experimental excitation energy spectrum and angular distribution are compared with CCBA calculations. These calculations clearly support the existence of a low-lying (s) virtual state, with a (negative) scattering length of the order a(s) ~ 13-24 fm and a P-1/2 resonance with an energy of E-r ≈ 0.38 MeV and a width of Γ ≈ 0.2 MeV.This work has been supported by the European Union Fifth Framework under contract No. HPRI-CT-1999-00018, the BMBF under contract 06 DA 115, GSI under contract DARIC, partly by the Spanish CICYT Agency under the projects numbers FPA2005-02379 and FPA2005-04460 as well as by the ISOLDE collaboration.Peer reviewed