The Portuguese coach worked with Crosas at Santos Laguna.
Marc Crosas defends
There has been talk this week regarding the future of Rangers loanee Emerson Hyndman. The American youngster has been linked with a move to Old Firm rivals Celtic. The Bournemouth owned star would be making quite the controversial switch if he did make such a move.
Rangers however should be considering the idea of bringing in a former Celtic player themselves.
New Gers boss Pedro Caixinha worked with midfielder Marc Crosas during his time at Santos Laguna in Mexico.
The Spaniard, a product of the Barcelona youth team, spent two-and-half years at Celtic before joining Russian side Volga in 2011. He went on to head to Mexico where he worked with Caixinha in a title winning side at Santos Laguna.
Nowadays he is at Cruz Azul, another Mexican side, but is not featuring regularly for the club. In fact, he is currently out on loan at lower league Mexican side Tampico Madeo.
Celtic's Marc Crosas (L) and Rangers' Kyle Lafferty in action
Rangers could therefore have a very good chance of getting their hands on Crosas, a midfielder that Caixinha knows well and one who might thrive in the Scottish top-flight yet again.
It would be a controversial switch, but one which would make sense from Rangers and for Crosas.