Tatiana Golovin is working with Loic Courteau, and later in the year, they will make a decision about extending this relationship. Courteau, of course, is the man who coached Amelie Mauresmo for six years, guiding her to two the world number 1 spot, as well as victories in two majors.
Does anyone recall who was coaching Golovin when she made very significant improvements in her game? I don't. Whoever it was, s/he did a great job, and Golovin looked like she was about to do something big...and then the ankle got messed up again...and you know the rest.