HITC Sport understands a number of clubs are tracking the Crawley Town hit-man.
James Collins (L) celebrates scoring for Shrewsbury Town
Collins has enjoyed a fine campaign at Crawley since arriving last summer from Shrewsbury Town.
The former Republic of Ireland Under-21 international hit his 20th goal of the season in all competitions in the 3-0 win over Leyton Orient on Saturday.
Collins has been Crawley's shining light this season and his goals and performances have been instrumental in keeping the club out of the relegation zone in League Two.
The 26-year-old is regarded as one of the best strikers outside the top two divisions in the country having been a regular goalscorer in League One and League Two.
After scoring 16 goals for Shrewsbury in 2011-12 including the winning goal to win promotion to League One, Collins also ended up as top scorer with Swindon the following season with 18.
Shrewsbury Town's James Collins (C) and Crawley Town's Josh Simpson in action
Collins' form saw him win a move to Hibernian in 2013, but after one year in Scotland he returned to Shrewsbury and finished the 2014-15 season as the club's top scorer with 17 goals to help them to win promotion again to League One.
The former Aston Villa youngster joined Northampton Town last January and netted eight goals to help the Cobblers to the League Two title last season and he has been in superb form for struggling Crawley to bring him to the attention of several clubs.
League One AFC Wimbledon, and League Two duo Portsmouth and Luton Town are all long-term admirers of Collins and are ready to make a move for the prolific striker in the summer.
Crawley are reluctant to lose their top scorer, but they are bracing themselves for interest in Collins once the season is over.