We report the discovery of a substellar companion around the giant star HIP67537. Based on precision radial velocity measurements from CHIRON and FEROS high-resolution spectroscopic data, we derived the following orbital elements for HIP67537 b: m_bsini = 11.1^+0.4_-1.1 M_ jup, a = 4.9^+0.14_-0.13 AU and e = 0.59^+0.05_-0.02. Considering random inclination angles, this object has ≳ 65 above the theoretical deuterium-burning limit, thus it is one of the few known objects in the planet to

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... arf transition region. In addition, we analyzed the Hipparcos astrometric data of this star, from which we derived a minimum inclination angle for the companion of ∼ 2 deg. This value corresponds to an upper mass limit of ∼ 0.3 M_, therefore the probability that HIP67537 b is stellar in nature is ≲ 7 mass of the host star and the high orbital eccentricity makes HIP67537 b a very interesting and rare substellar object. This is the second candidate companion in the brown dwarf desert detected in the sample of intermediate-mass stars targeted by the EXPRESS radial velocity program, which corresponds to a detection fraction of f = 1.6^+2.0_-0.5 fraction observed in solar-type stars, providing new observational evidence of an enhanced formation efficiency of massive substellar companions in massive disks. Finally, we speculate about different formation channels for this object.