A sad looking plant

My son has asked me to identify the five plants in this sad looking pot and I've done all but one, this strappy looking one below. Any ideas please?

 

Doesn't look very happy does it ! looks like a Cordyline to me.

 

I'm no expert, but I think Cordyline as well x

 

Thank you both, I had suspected that but didn't think anyone would cram it into a small pot with four other large growing plants! Garden centres have got a lot to answer for at times.