By Kheredine Idessane
Last updated at 1 hour ago.
John Souttar is big and old, so he can make sure his head is right.
"John Souttar will be available for selection until things change", says the manager.
The defender has signed a pre-contract with Rangers and could move this month for a fee but Ibrox boss Giovanni van Bronckhorst expects a summer arrival.
Souttar and the third-placed Hearts will play at home to St Johnstone on Tuesday.
The most important thing is the football club and the team.
John is one of the best players in the squad so he will be available for selection until things change.
This is an important season for us. We're in a good position. It's about the football club and there will be negative vibes.
He's reassured us that he will give 100%.
Souttar has been a mainstay in the Hearts team this year, scoring three goals in 22 games, and made a scoring return to the Scotland side in November.
"I've spoken to John, he understands the situation," said Neilson. He's big and old enough to make sure his head is right. He reassured us that he would give 100% in training. 100% if selected.
It is important for us that we keep our Scottish identity, and that is why we have lined up a very good defender.
"We have to wait on what will happen in this window, but as far as I know we welcome John in the summer."