I used yesterday the ST as AML because the 2nd had red card and usually the ST -Moukete, Cameroon, - perform better as AML.

Same in all my history moving STs as AMC's to convert the 4-3-3 in 4-3-1-2 or moving too a MC as DMC to create the transformer called supreme diamond.

If is not a conflictive player, who don't tend to be a negative impact for the team, there's no problem, believe me.