The Rugby Football Union remains open to hosting further NFL games at Twickenham despite concerns over the state of its pitch.
Twickenham was the venue for two NFL games last month, and American football markings were still clearly visible on the turf as England beat Argentina last Saturday.
As reported by the Times, a different type of paint was used for this year's fixtures that stained down to the soil, meaning the RFU's head groundsman, Keith Kent, was unable to fully remove the markings in time for the Pumas' visit.
It is understood that while there were no problems with the surface from a playing perspective, television pictures that displayed a scarred pitch to millions of viewers concerned the RFU.
— Tom Hamilton (@tomESPNscrum) November 11, 2017
An RFU spokesman told ESPN that English rugby's governing body will share its concern with the NFL, along with other feedback, as part of a scheduled debrief.
Ground staff will continue their efforts -- which included laying fresh grass as well as painting over the markings -- this week in order to remove the markings for the visit of Australia this Saturday.
The RFU signed a deal back in 2015 to host three matches, the final game in that agreement being the Minnesota Vikings' 33-16 win over the Cleveland Browns on Oct. 29.
Tottenham's new stadium is scheduled to host at least two games a season for 10 years from 2018, but should that development hit difficulties then the RFU would be willing to step back in.