It's going to stay?

Yes, the Cougars will be able to sell naming rights to Elfstrom Stadium. But, Elfstrom will remain a part of the complex:

Elfstrom name to stay

Philip Elfstrom brought minor league baseball to Kane County, and to some it may seem like heresy to sell the naming rights to Elfstrom Stadium to the highest bidder.

But Kane County Forest Preserve officials Tuesday emphasized that allowing the Kane County Cougars minor league baseball team to sell the stadium naming rights will not push out Elfstrom's name.

The complex that includes the current Elfstrom Stadium and the Roberta Campbell Center behind it still will bear the Elfstrom name. The entire complex will be called the Philip B. Elfstrom Events Center, even when the stadium takes a different name.

It doesn't sound like it will be Something Something Field at Elfstrom Stadium. Instead it would be Something Something Stadium at Elfstrom Events Center?