The phrase "an external player" is correct and usable in written English.
It can be used to refer to an entity or individual that is not part of a particular group or system but interacts with it in some way.
Example: "In this project, we need to consider the impact of an external player on our overall strategy."
Alternatives: "an outside participant" or "a third-party entity".
Should we choose to become an external player, our EU science participation terms will all come down to negotiations.
Inside, along with Koss speakers, are 512 megabytes of storage — enough for about 128 songs — and MP3-playback circuitry, allowing unobtrusive listening to music without connecting an external player.
It is a variation of the theme of Perón's "arrival" as an external player (as emphasized by Sigal and Veron but with special significance for the beliefs about the generation of income).
"New variants of team sports may be devised in which the coach or an external player may influence the moves of the team... Imagine visitors of a large sports stadium or theater being guided to their place or being evacuated from a stadium in the most efficient way".
The World Bank Multi Country AIDS Program MAPP) has also been an external player in funding for HIV in both countries.
The Russian establishment, witnessing President Obama promulgate policy based on diplomatic engagement rather than military engagement, is well aware that the Syrian civil war is fueled by complex ethnic and sectarian divisions involving several regional players, and that an external actor like the Russian Air Force cannot end it without negotiations.
An advance by one external player and its domestic proxy in Syria is matched by a counter-move by another player.
Down the road, however, there is scope for growing tension as both seek to emerge as the dominant external player in Syria.
Mr Ping hopes international pressure will bear down on Mr Bongo, who clearly believes time is on his side because no external player is ready to consider anything like outright intervention.
Maybe a short way to put all this is to say that we have a real problem with excessive leverage; that's not at all the same thing as the nation being deeply in hock to some external player or players.
For the time being, there shouldn't be a realistic chance for external players to win these markets over.
