Only the maha-bhagavata Sri Gurudeva is able to give the name of Sri Kåñëa which is non-different from Krsna.

nama-cintamani-krsnas
caitanya-rasa-vigrahah
purnah suddho nitya-mukto
'bhinnatvan nama-naminoh

Sri Krsna's name is directly Sri Krsna. It is a spiritual, transcendental object full of liquid mellowness. The Divine Name arises or manifests Itself upon the tongue of someone who is favourable towards service.

The glorification (kirtana) fraught with spiritual offence to the Divine Name done by those who are inclined towards enjoyment or renunciation is not the pure Divine Name. The pure Divine Name (suddha nama) and the stage of offence to the Divine Name (namaparadha) are not the same. The mahabhagavata who is free from spiritual offences to the Divine Name and who takes shelter in the glorification of the pure Divine Name is alone fit to bestow the name of Sri Krsna.

(Srila Sarasvati Thakura)