Gian Carlo Minardi has blasted the decision by certain rivals to block the return of Marussia to the 2015 Formula 1 grid, claiming it is a move that will ultimately put other teams under threat.

Marussia last week laid out a plan to exit administration and return to F1 in 2015 under the 'Manor GP' guise, but its hopes of succeeding hit a major hurdle when its request to use its 2014 car in the meantime was blocked by rivals, most notably Force India.

It is a move that has been blasted as short-sighted by Minardi, eponymous founder of the Minardi team that competed in F1 between 1985 and 2005.

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An outfit that frequently struggled for points during its 20 years on the grid and was a perennial back marker in its latter years in F1, Minardi resonates with the struggles of Marussia and supports its attempts to return to the sport, not least because it would bolster a thinning grid.

With this in mind, Minardi says that having its return blocked by rivals in favour of instead acquiring a share of its prize money amounts to 'unsportsmanlike behaviour'. He also points out that if Marussia wasn't there it would instead leave higher profile teams fighting for the back of the grid, thus putting them in precarious situations commercially.

"An absurd and unsportsmanlike behaviour," he told the Minardi website. "Opposing small teams in the hope to split up the amount due to Marussia, but perhaps they did not count to ten. Get rid of the two Cinderellas, Marussia and Caterham, it means shortening the grid.

"Consequently, the last row would be occupied by teams with far greater budgets and ambitions (such as Force India itself, Sauber and Lotus), with commercial consequences and in terms of image to be verified."

"This situation reminds me of the '96-'97 seasons, when I defended very strongly the importance of small teams. I argued that without teams participating with great passion but limited means - hoping, who knows, to find the right funds for the future - on the last row there would inevitably finite big manufacturers.

"The manufacturers are not waiting years to grow and achieve positive results; they have commercial and image objectives in the short and tangible consequence of the choices in those years, was that year after year we have lost almost all of them.

"I hope that this is not the final decision and that there is room for reasoning; Now as then, this sport needs also all those that laboriously take part and hope to find the means for a more glorious sport in the future."